Wireless motion detector with microwave sensor that notifies the owner of first signs of home or office intrusion. Designed for rooms with air conditioners, fireplaces and where there is a likelihood of light flickering, glare and reflections. - The additional microwave sensor filters possible interference from the air conditioner and curtain movement - The device operates up to 5 years without battery replacement - Ignores pets weighing up to 20 kg and with a height up to 50 cm