http://www.gadgettown.com/Dual-Beams-Wired-Alarm-Curtain-Infrared-Detector-E01569.html
The Dual Beam Wired Alarm Curtain Infrared Detector is a power code wireless digital PIR detector, that will allow you to secure your home while allowing pets to move freely anywhere in the house. This provides further flexibility in aiming the detector.
