This screw-in light module is very practical and easy to use. Easy to turn lights on/off. Saves energy by allowing the lights to be easily turned off. You simply screw it into any light fixture, screw in a bulb, turn the power on, and then send it a code from a plug -in or wireless remote light controller. Easy to program with electronic programming. To program just send the same code three times. When the Screw-in Module receives the same code for the third time it turns on the light to let you know that it has "learned" the code. It then remembers this code indefinitely, even if the power fails. To "teach" the Screw-in Module a new code, you just remove the power, reapply it, and then send a new code three times. Electronic programming means no code wheels and more reliability. 
For lights not having a plug-in cord
For incandescent lamps only
Responds to On/Off, All On/Off (non-dimming)
Remembers code after power outage
Silent operation, no clicking relay sound
Tiny in size...only 2.5"x1.25" (plus bump on one side)
120VAC, 60 Hz, 2 watts
Use with incandescent lamps between 40 and 150 watts
Suitable for outdoor use (install module with the directional arrow pointing towards the ground)
Manufacturer: X10 Wireless Technology, Inc
Manufacturer warranty: 1 year 
Product questions: 800-442-5138