. The Yale Pet PIR Motion Detector is wireless and easy to pair with your Yale Home Alarm System* allowing you to extend you system to tailor it to your individual needs.This Pet friendly accessory will activate the alarm when larger motion (25kg and above) is detected. Ideal for homes with one small pet (less than 25kg). Please note that when used with larger pets there is an increased possibility of false alarms. In these scenarios use a Door/Window Contact to protect the area instead.*Compatible with Yale SR- Smart Home Alarm Systems and EF- Series Alarms. Features . 868MHz Technology - Yale uses a frequency that is tightly controlled meaning a clearer channel with less interference.Connected - Connect to Yale SR Smart Home Alarm and EF Series Alarm Kits.DIY Friendly - Wireless and; easy to pair with your Yale Home Alarm System*.2 Year Guarantee - Guaranteed for 2 years from date of purchase.Batteries Included. .