Qualilux Dusk to Dawn LED Light Bulb is made with a built-in photocell sensor. It can be automatically turned on at dusk when light is fade away and off at dawn when light is detected.- Built-in Photocell sensor.- Automatically turn on at dusk and off at dawn.- No timer required.

Qualilux unique technology of smart chip supports the bulbs to recognize its own light or natural light. They can be used at close without interfering to each other. - Built-in smart chip.- Can use at close to each other.- No interference problem. - Support the close use of more than 2 bulbs. - No need to keep the distance of 2 bulbs more than 3.3 FT.

Qualilux Dusk to Dawn Light Bulbs are very convenient to use. Just keep the switch on and forget it. No requirements for a timer.- Convenient to use. - Keep the switch on.

Specification: Bulb Shape: A19Bulb Base: E26Bulb Size: 2.36x4.65 inchesInput Voltage: 120 Volts (AC)Power Use: 9.5 WattPower Equivalent: 50 WattLuminous Flux: 850 lmColor Temperature: Daylight White 5000KLED Chips: SMD 2835Life time: 25000 hoursBeam Angle: 270 degrees Package content: 2 bulbs Applications: porch light post light ceiling light wall lantern front door hallway garden patio stairways garage yard.