(Deal ends, May 3rd) Stop by Woot! where they are offering Wireless Driveway Alarm with 2 Sensors for just $17.99 (Reg $33)! Amazon is offering the same Alarm for $26.99, making Woot! deal a pretty awesome one!
Shipping is free for Amazon Prime members.
These PIR sensors are made of double waterproof/weatherproof material rated IP65 and have been extensively tested in extreme weather, and it is suitable for both outdoor and indoor use. Note, it requires three AAA batteries for each sensor (not included) and three C batteries or a power adaptor for the receiver (not included)! See the offer here!
Wireless Driveway Alarm with 2 Sensors $18
Wireless Driveway Alarm with 2 Sensors
JUST $17.99 (Reg $33)
*$26.99 at Amazon