Chamberlain CWPIR Weatherproof Outdoor/Driveway Wireless Motion Alarm and Alert System Add-On Sensor, Includes 1 Sensor
$36.57Additional PIR sensor works with Chamberlain CWA2000 base receiver (Sold Separately)
Weatherproof outdoor sensor with adjustable sensitivity control
Detects motion up to 30 feet away with wide 120-degree angle coverage