$8.98from · $2.50 per bulb
TJOY Sensor & Specialty Bulbs
These bulbs do one extra job. Two turn on at dusk by themselves. One lives in the fridge. One runs on a battery. Two give colored light from a plain switch.
All use the standard E26 base.
Best TJOY Sensor & Specialty Bulbs for the job
- Best for: A porch light that gets left onTJOY Dusk-to-Dawn A19 LED Bulb
It lights at dusk and goes dark at dawn: 800 lumens from 9 watts. From $8.98.
- Best for: A power cut or a closet with no wiringTJOY Rechargeable LED Light Bulb with Remote
It runs 8 to 10 hours on its battery. From $19.99.
- Best for: A dead fridge lightTJOY A15 LED Refrigerator Bulb
550 lumens from 5 watts, built for the cold. From $6.99.
$16.99from · $5.46 per bulb
$6.99from · $3.50 per bulb
$19.99from · $9.99 per bulb
$11.99from · $3.00 per bulb
$14.99from · $3.75 per bulb
Dusk-to-dawn bulb, timer switch, or leave the light on?
A 9-watt bulb lit from dusk to dawn costs about $4.34 a year. Left on all day it costs about $8.67.
| TJOY dusk-to-dawn bulb | Plain bulb left on | Plain bulb on a timer switch | |
|---|---|---|---|
| Hours lit per day | About 12, from dusk to dawn | 24 | The hours you set |
| Yearly cost at 9 watts | About $4.34 | About $8.67 | About $4.34 at 12 hours |
| Follows the seasons | Yes | Stays on all day | No: reset it as the days change |
| Better choice when | You want no setup and a fixture that lets daylight in | The light must stay on in daytime, as in a windowless hall | The fixture is opaque metal and would blind a sensor |
Cost is our arithmetic at 11 cents per kWh, the rate used on the FTC Lighting Facts label. Sources: FTC: Lighting Facts label, questions and answers, read 3 October 2026.
Sensor & Specialty Bulbs: questions
Do dusk-to-dawn bulbs work in any fixture?
They work in fixtures that let daylight reach the bulb. In an opaque fixture the sensor reads dark all day and the 9-watt bulb stays on.
Can a dusk-to-dawn bulb be used with a motion sensor?
No. A motion fixture cuts the power between triggers, and the bulb needs steady power to run its own sensor. Use 1 control, not 2.