Features: Brand new， high quality. Protect your home， apartment or office Can keep you aware of intruders or visitors in your home and extends your security system Wireless， infrared detector， motion-activated. Alarm sound level: max.105dB Detection area: 3-5m (10-16feet) long and 110 degrees wide Remote control distance: 2-5m (7-15feet) Remote Control Power Supply: 3 x AG13 batteries (included)Alarm Power Supply: 4 x 1.5v AA batteries or 6v DC power (not included)Package including:1 x Motion Sensor Alarm2 x Remote Control 3 x AG13 batteries (Remote Control Power Supply)