Chamberlain Cwpir Weatherproof Outdoor Driveway Wireless Motion Alarm and Alert System Add-On Sensor Includes 1

Chamberlain wireless motion alert add on sensor for the wireless motion alert system CWA2000 Sold Separately. PIR sensor detects motion up to 30ft away and features adjustable sensitivity so small animals can pass undetected. Wide 120 degree angle coverage. Two year battery life. Comes with mounting bracket. Half mile range with CWA2000 base unit sold separately.