Additional 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.
Transmits signal to base station (Chamberlain CWA2000) up to a half-mile away in ideal situations.
Easy Installation / easy operation. 2 year battery life. Includes mounting bracket.