iMeshbean® Wireless GSM PSTN PIR Home Security Alarm Burglar System Auto Dialing DIY USA (5 PCS

This item is designed to work with your security systems, this battery-operated motion detector vigilantly stands guard looking for activity.
Operating Frequency: 433 MHz;
Detecting distance: 10m; Detecting angle:110 degrees
Power: 9V Heavy Duty Battery
Package: 5 X PIR Infrared Detector; 5 X Wall Mount kit