The 2GIG-PIR1E-345 is a wireless, eSeries encrypted, motion detector that features a wide 30' X 50' foot wide area of coverage when set to high (HI) sensitivity mode. With the 2GIG-PIR1E-345, you can even arm your 2GIG security system with pets in your house because the sensor includes passive infrared technology for pet immunity up to 55 pounds. The 2GIG-PIR1E-345 communicates with the 2GIG GC2e and GC3e control panels using the 345 MHz frequency. Additionally, the PIR1E-345 is tamper proof and you will receive immediate alerts if anyone ever tries to tamper with the detector or break it. Works with 2GIG encrypted panels only.