7 best christmas light bulb size

Christmas light bulbs come in various sizes, and the size of the bulbs can affect the overall appearance and brightness of your holiday decorations. Incandescent Christmas light bulbs are a traditional and popular choice for holiday lighting. Here are some common Christmas light bulb sizes related to incandescent bulbs:

  1. Miniature Bulbs (Mini Lights):

    • Miniature Christmas light bulbs are tiny and come in various shapes such as traditional round, conical, or even novelty shapes like stars and bells.
    • These bulbs typically have a screw or push-in base, making them easy to replace if one burns out.
    • Mini lights are often used on Christmas trees, wreaths, and as outdoor decorations.
  2. C7 Bulbs:

    • C7 bulbs are slightly larger and have a distinctive elongated, candle-like shape.
    • They are often used for both indoor and outdoor decorations and can be found in a variety of colors.
  3. C9 Bulbs:

    • C9 bulbs are larger than C7 bulbs and provide a brighter and more prominent display.
    • They are commonly used for outdoor decorating, such as outlining the roofline or trimming bushes and trees.
  4. G-Series Bulbs:

    • G-series bulbs are globe-shaped and come in various sizes, such as G30, G40, and G50.
    • These bulbs are often used for creating a classic, vintage look in both indoor and outdoor displays.
  5. Specialty Bulbs:

    • There are many specialty Christmas light bulbs available, including icicle lights, twinkle bulbs, and novelty-shaped bulbs.
    • These bulbs are designed to add specific effects or themes to your holiday decorations.

It's important to note that while incandescent bulbs have been a traditional choice for Christmas lights, many people are switching to LED lights due to their energy efficiency and longevity.LED lights are available in various sizes and styles as well, and they offer the advantage of lower power consumption and reduced risk of overheating.

When purchasing Christmas light bulbs, make sure to check the specifications and compatibility with your light strings or fixtures to ensure they fit and function as intended.

Below you can find our editor's choice of the best christmas light bulb size on the market
  

Novelty Lights 25 Pack C9 Ceramic Outdoor String Light Christmas Replacement Bulbs, Multi, E17/C9 Base, 7 Watt

Based on 1 reviews Check latest price
  • 25 Pack C9 Ceramic Multi Christmas Replacement Bulbs
  • Each C9 Bulb is 7 Watts and 120V
  • C9/E17 Intermediate Nickel Base
  • 3,000 Hour Life Light Bulb - Bulb Dimensions: 3" Tall by 1-1/4" Wide
  • PRODUCT NOTES: The listing is for REPLACEMENT BULBS ONLY with C9 strings sold separately. The bulb dimensions are 3" Tall by 1 1/4" Wide and are shown with reference in the secondary images. Please make sure that you that you are in need of a C9 Intermediate base bulb before ordering because a common mistake by customers is ordering the wrong size bulb. BROKEN BULBS? IF YOU HAVE ANY BROKEN BULBS PLEASE CONTACT OUR CUSTOMER SERVICE AND WE WILL SEND YOU NEW REPLACEMENT BULBS.

User questions & answers

Question: Is the multi pack as shown--always 5 red, 5 blue, 5 orange, 5 green 5 white
Answer: Dear Satheesh. Thank you for the interest and contacting us regarding the Mounting Dream mount. We understand and we're glad to help. Since the soundbar brackets are usually mounted in between the wall mount TV bracket and TV panel, it is compatible but may require longer TV bolts and additional spacers/washer to flush the brackets together as much as possible. Please keep in mind that the MD5425 can only expand up to (600mm) 24" inches wide/horizontal for the TV VESA hole pattern and is only able to hold up to 13 lbs. maximum weight for the soundbar. Thank you! Mounting Dream Staff
Question: Are these opaque or transparent? There are answers saying transparent and answers saying opaque. Confusing! Which is correct
Answer: The smallest depth is 3.6", largest depth is 6.6" Thanks, - Haydn @ ECHOGEAR
Question: Does anyone know if these would fit Avon's Chilly Sam from the 90s
Answer: I'm not sure! I only know that it works with a huge variety of sound bars and extendable.
Question: What is the difference from C7 to C9 bulbs
Answer: The plate against the wall is probably an 1/8 of an inch thick. If all your connections are on the bottom of the sound bar you can get the bar 1/8 of an inch away from the wall. Hope this helps!
Question: can these be used as a replacement bulb for night lights
Answer: Yes, It would work for a huge variety of sound bars.
Question: How do I know if I need 7watt or 5watt
Answer: Hello George, Thank you for your interest! If you are referring to the MOUNT-E-MT100 this speaker mount will work with the motorized mount. Please let us know if you have any further questions. We are always happy to help. Thank you, VIVO Customer Support

Product features

C9 Replacement Christmas Light Bulbs

Our 25-Pack of C9 ceramic replacement lamps are perfect for decoration of your house or business for the Christmas season. Our C9 bulbs have a intermediate base (E17) and measure 3" tall and 1-1/4" wide.

Stringers Sold Separately

Use with our C9 Stringers, Heavy Duty Intermediate base (e17) Stringers, Vintage e17 Twisted Wire Strings with Bakelight Sockets or bulk C9 spools for all your Christmas lighting applications.

Applications

Use our traditional C9 ceramic opaque replacement bulbs for your decorations needs. Some applications include: Christmas, roof line string lighting, weddings, restaurants, patio, special event tents, Christmas trees, and more.

Roofline Decoration
Christmas Tree Decoration
Traditional Christmas Bulbs
C9 Bulb Measurements

Christmas Light Bulbs Transparent Clear Twinkle Flashing Blinking Box of 25 C7 E12 Roof Holiday Tree Home Decorating Incandescent Outdoor Lighting (Clear Glass, Green)

Based on 134 reviews Check latest price
  • Box of 25 Christmas Light bulbs! Each box comes with C-7 Flashing/Blinking/Twinkling Transparent Multi-Color Christmas Light Bulbs. Replace your outdoor patio light string light bulbs with a set of classic traditional Christmas Lights!
  • Decorating your roof lights, Christmas Trees, Holiday decorations, Wreaths, Garlands, home holiday lighting, seasonal lights in Twinkle Multi-Color bulbs!
  • 7 watt bulbs and 130 Volt Traditional Incandescent C7 (E12 socket) bulbs and rated at over 3,000 hrs. Weatherproof Glass Bulbs are perfect for Outdoor installations. Screw into your outdoor roof string light cord and watch the holiday spirit shine!
  • These are super bright blinking twinkle bulbs. Tripple Dipped
  • Indoor/Outdoor Rated & UL Listed

User questions & answers

Question: Do these blink on and off or do they twinkle like a flame dimming and getting brighter
Answer: Dear customer Thank you for contacting us regarding Mounting Dream Mount. We understand and we are glad to help. Mounting Dream mounts are perfectly compatible for installing directly into the "solid" brick/stone/concrete wall installations. Considering the safety of your TV, just a friendly note, it is best to install directly into the solid brick/stone/concrete walls because the lag bolts requirement will require at least 2.25" ~ 2.5" inches depth to lock into the solid wall. DO NOT install or rely on the "Mortar" due to weather environments which will either have moisture or being too dry which will decay overtime, basically the material is brittle and not reliable overtime. We look forward to hearing from you shortly. Hear from you soon!
Question: How do you set bulb to twinkle
Answer: Dear R.M. Thank you for the additional details. Yes, the MD2380 combined with the MD5425 soundbar bracket will work perfectly for the hw-r450 and un50ru7200 which is the perfect combination for the specifications! Thank you! Mounting Dream Staff

Product features

Custom Hand-Made Quality

Almost every item in our store has been built by one of Lee Display's fabricators. With precision and excellence for over 50 years, we strive to make your holidays happier every year.

Christmas Trees Made to Order

Every part of the Lee Display Christmas Tree is made in-house. From the tinsel garland branches to the wooden bases, each tree has been manufactured from scratch. 100% made in the USA.

Family Owned and Operated

Since 1902, Lee Display has been a pioneer in the industry of visual merchandising and custom holiday displays. We have vision and style that incorporates tradition, class, and color.

Every Season to Choose from

Lee Display offers a wide variety of unique holiday decorations for every new season. We offer brand new products every Spring, Summer, Fall, and Winter.

Potting Table

Rustic wooden potting tables and rolling carts for your outdoor parties.

Moss Covered Flower Box

Display your favorite succulents and flowers in a flower box covered with real green moss.

Seasonal Wreath

Hang a gorgeous floral wreath on your front door from our spring collection.

Wine Barrel Cutting Board

Serve your guests in style with a cutting board made from a real Napa Valley wine barrel top.

Wooden American Flag

Decorate your walls in Red, White, and Blue with a hand-made wooden American Flag like a true patriot.

Red, White, and Blue Patio Lights

Replace your old patio lights with a set made for the 4th of July. Sold in sets of 25 feet with transparent G50 Red, Clear, and Blue bulbs.

Red, White, & Blue Christmas Trees

Add fun and unique summer accents to your home decor in news ways with a Red, White, and Blue Christmas Tree.

Firework Tinsel Garland

Lee Display manufactures tinsel garland in every holiday color so you'll always have the right colors for the season. 100% made in the USA.

Rustic Spheres

Metal spheres finished in patina rust and built to fold for easy storage. Display a rusty sphere indoors or outdoors as garden elements and lawn ornaments.

Halloween Garland

Made from our custom tinsel garlands, we have funky Halloween Brush Garlands in Orange and Black.

Vintage Patio Lights

Classic Edison Light Bulb & Hanging Cord sets come in custom sizes and lengths. Hang Vintage Patio Lights for the fall season.

Magnolia Leaf Garland

Garlands made with green and gold magnolia leaves add beautiful natural elements and accents to you fall home decor.

Multi-Color Christmas Lights

Classic Multi-Color Christmas Light sets sold in sets with the patio cord included or in boxes of 25 bulbs.

Alpine Green Christmas Trees

Lee Display's classic Christmas Trees come in so many different colors to choose from. Match your holiday decorations with a feather style Tinsel Tree.

Decorated Wreaths

Shop for Wreaths fully decorated with lights and ornaments and shipped to your door or ask us for something custom and we'll be more than happy to make it just the way you want!

Chili Pepper Lights

Lee Display offers a wide variety of holiday lights for all types of parties. From Red and Green Chili Pepper lights to Fairy Lights, you'll find the perfect set of lights for your holiday occasion.

UL Listed Box of 25 C7 Led Replacement Bulbs,Commercial Grade 2 SMD LEDs in Each C7 Dimmable Lights Bulb for Outdoor Christmas String Lights,Full Waterproof and Break Resistant (Sun Warm White)

Based on 418 reviews Check latest price

Product description

UL Listed Box of 25 C7 Led Replacement Bulbs,Commercial Grade 2 SMD LEDs in Each Lights Bulb for Outdoor String Lights,Full Waterproof and Break Resistant (Sun Warm White)

Specifications:

Grade:Commercial;

Bulb size:⌀21 mm*50 mm,fit into E12 socket base;

Bulb material:durable plastic;

Twist proof bulbs:Yes;

Led bulb shape: C7; 2 SMD LEDs in each bulb

Voltage:120;

Usage: CSA and UL Listed for indoor and outdoor ;

Watts:0.58 watt;

Bulb average lifetime:60,000 hours.

Package Content:

Pack of 25 C7 Sun Warm White Led bulbs/ Mailbox

Buy these Led replacements bulbs for Christmas window candles or outdoor luminaries.

No maintenance/ replacements necessary for this entire holiday season!

The bulbs are just the right brightness for luminaria or good ol' fashioned C7 outdoor strings, with the added advantage of minuscule electric draw,they burn very cool, so they won’t help with frost protection.

But because of that, they don’t discolor plastic either.

They look gorgeous. A nice warm white color, they are quite bright but look great, especially from outside.

Highly recommended!

We promise 3 year warranty for quality-related issued for every product and kind reliable customer support.

So no worry and don't wait,strong demand is expected,order now!

  • Pack of 25 pcs C7 sun warm white LED bulbs,fits into E12 or C7 lights socket for Christmas home lighting decoration.
  • 2 Surface Mounted Diode LEDs SMD technology makes each C7 bulb more environment friendly and energy saving more than 80% compared to incandescent bulbs.
  • Bulb shell is made of waterproof and break resistant durable plastic,the diamond faceted bulb reflects a magnificent light.
  • Brighter bulb emitting 0.58 watt light,cool to touch,can be used for light strands,Bulbs have an average lifetime of 60,000 hours,which means great bulbs that last for years.
  • UL and CSA Listed approved for indoor and outdoor safe use,no heat and fire hazard,3 year warranty guarantee policy.

User questions & answers

Question: what is the lumens rating for the white bulbs
Answer: Yes
Question: This product was for c9 led e17 or c9 light sockets for christmas holiday decorations. they do not fit c9 light sockets. is there any such sockets
Answer: No
Question: Are these as bright as a 4w or 7w incandescent c7 bulb
Answer: No
Question: Do these actually light up in a bright white or do they have a yellow tint to them like incandescent bulbs
Answer: Dear Customer, Thank you for the interest and contacting us regarding the Mounting Dream Products. We understand and we're glad to help. To better serve you, please provide the following information for us checking: The full TV model name; The clear picture of the TV back panel; The VESA pattern of the TV; Please feel free to contact us for any other conceen by mail: [email protected]. Tks! Mounting Dream

allsun Christmas Light Tester Non Contact Voltage Tester Light Bulb&Fuse Detector 12-600 V AC Voltage Detector Christmas Light Fuse Checker Light Repairing Tool, Blue

Based on 437 reviews Check latest price
  • ABS
  • Christmas Light Tester is non-contact AC voltage detection, used as a 12V to 600V AC power tester, allows you to easily find any burned out bulbs on your Christmas lights
  • Christmas Light Bulb Tester has adjustable detection sensitivity, With a push of a button you can locate your Christmas light string problem, operating environment is: 0°C to 40°C;relative humidity<80%;indoor use
  • Christmas Light Voltage Tester has audible and visual indication and has a built in bulb remover to remove bulbs from the light set easily
  • Holiday Light Tester can test bulbs, fuses, and the light strand, saves you money by letting you quickly fix your existing lights
  • The fuse checker comes with 2pcs “LR44” watch batteries, Pocket size and easy to indoor use

User questions & answers

Question: Does this work with led christmas lights
Answer: Yes, it can. "Received mine and did not work,Sent it back"---W.Jack Frost. We are afraid there is one imoprtant point for every customer. Before use, it needs to open the battery door and take out the insulating strip, then battery also needs to be installed well again(Please kindly be reinstalled according to the positive and negative poles). You can see our listing picture it showed how to install batteries.
Question: Will this item test a 2.5 volts mini bulb
Answer: Yes, the tester can test a 2.5 volts mini bulb. The instrument's AC voltage detection range is:12Vac-600Vac,at 50/60Hz. Don't use the instrument to detect an AC voltage below 12Vac or above 600Vac ,do not use the instrument to detect DC voltage.
Question: How do you test a full strand? My tree is only 2 years, and only 1/3 of it is lit. I do not want to test one bulb at a time, would take forever
Answer: Hi, you won't need to remove each bulb to test. Removing bulb from Christmas light set, 1.Move the bulb remover control to stretch out the bulb remover. 2.Hold the control with thumb and insert the metal plate of the bulb remover between the bulb husk and the bulb base to make the bulb loose, then pull out the bulb with your fingers.(Note:Some light strands have what is known as a “locking” bae or clip.These require you to unlock the bulb husk from the base in order to remove the bulb). We are manufacturer, allsun is our own brand. Before packaging, every product has a security quality control for our experienced QC. Just as it is impossible to be a human being and be liked by everyone. Don't like people will eventually don't like even if we do well. So as a honest Amazon seller, we can only do our best to support every customer who chooses our store to serve the best. Thanks!
Question: I just bought one, but the instructions aren't clear. How do you test the bulbs
Answer: You have a switch on the side with the pocket clip: fuse-off-bulb. To test bulb, switch to bulb. On the side is a wheel which will set sensitivity. One important thing to know is to check the batteries because I got one with low batteries.

Novelty Lights 25 Pack C7 Outdoor String Light Christmas Replacement Bulbs, Clear, C7/E12 Candelabra Base, 5 Watt

Based on 1 reviews Check latest price
  • 25 Pack C7 Clear Christmas Replacement Bulbs
  • Each C7 Bulb is 5 Watts and 120V
  • C7/E12 Candelabra Nickel Base
  • 3,000 Hour Life Light Bulb - Bulb Dimensions: 2-1/4" Tall by 1" Wide
  • PRODUCT NOTES: The listing is for REPLACEMENT BULBS ONLY with C7 strings sold separately. The bulb dimensions are 2 1/4" Tall by 1" Wide and are shown with reference in the secondary images. Please make sure that you that you are in need of a C7 candelabra base bulb before ordering because a common mistake by customers is ordering the wrong size bulb. BROKEN BULBS? IF YOU HAVE ANY BROKEN BULBS PLEASE CONTACT OUR CUSTOMER SERVICE AND WE WILL SEND YOU NEW REPLACEMENT BULBS.

Product features

C7 Replacement Christmas Light Bulbs

Our 25-Pack of C7 transparent replacement lamps are perfect for decoration of your house or business for the Christmas season. Our C7 bulbs have a candelabra base (e12) and measure 2-1/4" tall and 1" wide.

Stringers Sold Separately

Use with our C7 Stringers, Heavy Duty Candelabra (e12) Stringers, Vintage e12 Twisted Wire Strings with Bakelight Sockets or bulk C7 spools for all your Christmas lighting applications.

Applications

Use our traditional C7 replacement bulbs for your decorations needs. Some applications include: Christmas, roofline string lighting, weddings, restaurants, patio, special event tents, Christmas trees, and more.

Roofline Decoration
Christmas Tree Decoration
Traditional Christmas Bulbs
C7 Bulb Measurements

Goothy 25 Pack C7 Clear Replacement Bulbs, C7 Clear Light Bulbs for Christmas Outdoor Patio Indoor String Lights, C7/E12 Candelabra Base, 5 Watt Night Light Bulbs- Clear

Based on 705 reviews Check latest price
  • Elevate Your Environment: Made of unique ceramic glass material, C7 bulbs is more easy to clean and not fade than usual bulbs and it looks very Elegant and generous.
  • E12/C7 Nickel base:Each C7 bulb base is made of High quality nickel material which will form a very dense and strong protective film to prevent corrosion from weathering.
  • Energy-efficient Bulb: 5 Watt for every bulb, 120 volts Power which gives warm lights for your room, Christmas tree, patio, garden or cafe.
  • Applicable scope:Goothy lights 25 pack C7 ceramic opaque incandescent replacement bulbs works great for any indoor or outdoor lighting application that requires this retro fit tradition C7 bulb. This bulb works great for house rooflines during the holiday season or strung in a canopy patio application.
  • Quick & Easy Setup: Set up your string lights in minutes. Always mount the string first before screwing in the light bulbs. For Outdoor Patios, We recommend using "aircraft wire" to use as support cable.

User questions & answers

Question: Is this a string light or just the replacement bulbs
Answer: About 24”
Question: Are these orange c7 bulbs two toned orange and yellow-orange as the picture shows? this is what i'm looking for
Answer: They unscrew and there should be a little suction tool that you can use to get them to turn and it’s helps so they don’t fall out as you unscrew them.
Question: are they multi colored
Answer: Yes, GU10 LED
Question: Will these fit in the average nite lights
Answer: I have my light fixture on a dimmer (it works fine - no ambient noise).......
Question: Can these bulbs be used in electric window candles
Answer: 21.5"
Question: Will these dim
Answer: rounded
Question: Will these work in my outside small base lights
Answer: The shades are whitish
Question: Anybody try these in regular plug-in night lights that come on at dusk? i tried other c7 leds and they flash like a strobe
Answer: sorry i do not have this light any more.
Question: Can these be used in old c9 incandescent string
Answer: No, there are no light bulbs included.
Question: How many amps does each bulb use
Answer: If you want it for 220 Voltage, please send a message to seller.
Question: how many leds in each bulb
Answer: Yes, the drop is adjustable. There is a set screw in the part that mounts to the junction box. We have 5 of them in our kitchen and the lengths vary from 4" to 24".
Question: Can I order less than 25? I bought 75 and a few failed so I just need a few replacements
Answer: the light was called a pendant light . witch I have hanging over my kitchen island. I don't know if there is enough cord for a swag light I had to cut the cord to shorten it was abought 26"long

Product features

Clear C7 Lights Bulbs

Goothy clear C7 replacement light bulbs are made of thickened glass, weatherproof, durable than other ordinary bulb.

Easy to installation

C7 light bulbs can easily fit into any C7/E12 Candelabra Base socket. Such as can fit standard home lighting sockets, Candle Lamps, Holiday Displays, Halloween lights, chandeliers, wall lights, Holiday Strings, decorative fixtures, night lights, etc.

UL Listed

Goothy C7 replacement bulb, Waterproof, Reliable quality, you can hang it indoor and outdoor, acoording you imagemation, you can freely decorate your house.

Safe Package

25 pack Clear light bulbs has been inserted into its sturdy storage box, reduce the collision between the bulb and the bulb during transportation.

Novelty Lights 25 Pack C9 Outdoor Christmas Replacement Bulbs, Multi, E17/C9 Intermediate Base, 7 Watt

Based on 181 reviews Check latest price

Product description

C9 Transparent Incandescent Christmas Replacement Bulbs - Outdoor Lighting - String Lights - Christmas Lights

25 Pack of Traditional C9 Transparent Christmas Lights have bright and vibrant coloring that will provide years of use for your Christmas light display. These 7-watt, 130-Volt bulbs with intermediate base will shine for 3,000 hours and have Nickel-coated bases to prevent corrosion. These transparent C9 replacement lamps can be used inside or outside to decorate roof lines, patios, Christmas Tree's,  and walkways.  C9 Intermediate base (C9/E17) 3" tall and 1 1/4" wide.  These bulbs screw into our C9 stringers (25' & 100'), our E17 Heavy Duty stringers (25', 100' & 330'), our commercial grade bulk 1,000' C9 Spool as well as our vintage 250' Twisted Wire E17 Heavy Duty Spools.

  • 25 Pack of Transparent C9 7 Watt Bulbs
  • 3,000 Hour Long Life Lamps
  • 110V-120V
  • 7 Watt Bulbs
  • Indoor and Outdoor Use
  • Intermediate Base
  • Nickel Coated E17/C9 Base
  • REPLACEMENT BULBS ONLY - C9 STRINGER SOLD SEPARATELY

Your satisfaction is our #1 priority and if you have any issues at all please us and we would be more than happy to assist.

Ordering the wrong size bulb is common so please reach out with any bulb size questions.

  • 25 Pack C9 Multi Christmas Replacement Bulbs
  • Each C9 Bulb is 7 Watts and 120V
  • C9/E17 Intermediate Nickel Base
  • 3,000 Hour Life Light Bulb - Bulb Dimensions: 3" Tall by 1-1/4" Wide
  • PRODUCT NOTES: The listing is for REPLACEMENT BULBS ONLY with C9 strings sold separately. The bulb dimensions are 3" Tall by 1 1/4" Wide and are shown with reference in the secondary images. Please make sure that you that you are in need of a C9 Intermediate base bulb before ordering because a common mistake by customers is ordering the wrong size bulb. BROKEN BULBS? IF YOU HAVE ANY BROKEN BULBS PLEASE CONTACT OUR CUSTOMER SERVICE AND WE WILL SEND YOU NEW REPLACEMENT BULBS.

User questions & answers

Question: This item requires special handling and cannot be shipped to your selected location." I bought these before, but now I cannot. Why
Answer: Dear customer,MSMING Led grow lights adopts multi-panel connection design,The 300W led grow light can be connected together to a wider area of illumination with one power point,Please NOTE Don't More Than 6 Panels.best wishes!
Question: I replaced them on my other C9 string and they keep popping my fuses. The old string did not twinkle
Answer: Yes, they are effective for my plants and they don't generate heat or noise!
Question: I have regular non twinkling c9 Christmas lights that are opaque. If I get these and replace the non twinkling lights will they still twinkle
Answer: Dear customer, Our lights have a built-in 24-hour cycle timing function. You can use the remote control or the buttons on the lights to switch the lights on and off every day. Because our lamps have built-in timing devices, we cannot add smart sockets for timing control in the front. If timing control was added to the lamp before, because the previous time is off after the power is turned off, the lamp will be powered off. After the power is turned on again, our software defaults the lamp to be off and the lamp will be in standby. Here what we want to emphasize is that the timer program of the grow light is 24 hours as a cycle. It means the timer program will restart and recycle in 24 hours later after the lighting program is set up well. for example, if we want the grow light to switch on 1 hours,then we set the timer in 1 hours. under this program, the light will work on 1 hours, then atomatically turn off in the coming 23 hours, and next it will automatically switch on again in the 1st hour of the next 24 hours program cycle. The grow light will continually turn on and turn off by recycleing in this way. The timer calculator will take the momment when you set up the program as its start-point to calculate the time. For example, if you switch on the grow light at the time-point at 6:00 pm,and set up the grow light to work 3 hours, then the light will turn on from now on, and turn off at 9:00 pm, and will contiually keep turning off in the coming 21 hours till it will automatically turn on in 6:00 pm in the next day. Totaly time that gone by in this circle is 24 hours. The light will automatically turn on after it finish its circle of program. Its working mode will go forever on this way.
Question: Are these bulbs plastic
Answer: Dear customer, Our lights have a built-in 24-hour cycle timing function. You can use the remote control or the buttons on the lights to switch the lights on and off every day. Because our lamps have built-in timing devices, we cannot add smart sockets for timing control in the front. If timing control was added to the lamp before, because the previous time is off after the power is turned off, the lamp will be powered off. After the power is turned on again, our software defaults the lamp to be off and the lamp will be in standby. Here what we want to emphasize is that the timer program of the grow light is 24 hours as a cycle. It means the timer program will restart and recycle in 24 hours later after the lighting program is set up well. for example, if we want the grow light to switch on 1 hours,then we set the timer in 1 hours. under this program, the light will work on 1 hours, then atomatically turn off in the coming 23 hours, and next it will automatically switch on again in the 1st hour of the next 24 hours program cycle. The grow light will continually turn on and turn off by recycleing in this way. The timer calculator will take the momment when you set up the program as its start-point to calculate the time. For example, if you switch on the grow light at the time-point at 6:00 pm,and set up the grow light to work 3 hours, then the light will turn on from now on, and turn off at 9:00 pm, and will contiually keep turning off in the coming 21 hours till it will automatically turn on in 6:00 pm in the next day. Totaly time that gone by in this circle is 24 hours. The light will automatically turn on after it finish its circle of program. Its working mode will go forever on this way.

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