PIR motion sensor ,alarm once the PIR detect any motion .
Infrared coverage 10 meters, 140° horizontal and 90° vertical
Arm and disarm with remote control, contact distance within 10 meters
Ultra-alarm sound: 130 decibel siren
Auto-reset 30 seconds later
Entry delay: 4 seconds
Exit delay: 30 seconds
Power operation: 2 x AA size batteries (not included)
Wall-mounted or free standing
Battery: low indicator
Dimension (W x H x D): 64 x 95 x 47mm