ARD2231-W2-868 is a dual-technology PIR wireless motion detector using infrared and microwave, ideal for residential and commercial security alarm systems. It offers detection up to 12 meters, a Pet Immune function, and 3 adjustable sensitivity levels. The two-way communication at 868 MHz ensures a range of up to 1600 meters in open field, with AES128 encryption and Frequency Hopping. Powered by a CR123A battery, it supports cloud updates and is designed for wall mounting. Dahua