Chamberlain Group Chamberlain Security Wireless Motion Alert System, Black (CWA2000)

$45.32 (as of May 26, 2019, 2:12 am) & FREE Shipping. $44.00

Set includes one base receiver and one sensor (ability to additional CWPIR sensors-Sold Separately)
Passive infrared (PIR) sensor is weatherproof and detects motion up to 30ft away and features adjustable sensitivity
Base receiver detects signals from sensors up to a 1/2 mile away (in ideal situations)

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