Golden Security intelligent wireless Pet immune Motion Sensor GS-N650 Motion Detection--- Your Golden Security Alarm System will be trigged when the motion is detected. Pet Friendly--- The Pet PIR Motion Detector is ideal for home with small pets that less than 20kg. Low Consumption--- The low power consumption design can support the battery life up to 24 months. Save your money. Transmission Frequency--- The PIR sensor uses the transmission frequency 433MHz to monitor, suitable for all Golden Security home alarm system. Widely Application--- This pet friendly PIR sensor suitable for the safety of villas, factories, markets, warehouse, house and office. You can know at the first time when a pet breaks in. NOTE: Can only work with Golden Security home alarm system