Motion Activated Light Control with Keychain Remote Just plug a lamp into the receiver and the lamp turns on when you driveway is entered, radios work great too! Timer switch allows choice of On time (6 seconds, 3 minutes, or 10 minutes) Field of Detection: 140 degree, Range: 60 feet Bonus key-chain remote included Optional Alarm Sound Available, Sensor uses 4 "AA" alkaline batteries (not included)