ARM320-W2-868 is a wireless input expansion module for intrusion alarm systems, with two-way communication at 868 MHz and a range of up to 1600 meters in open field. It supports 6 alarm types and ensures security thanks to 128-bit AES encryption, Frequency Hopping and Tamper protection. It integrates a triaxial accelerometer, temperature monitoring, LED indicator and low battery warning. Powered by 3 CR123A batteries, it supports cloud updates and wall-mounted or installation inside third-party devices. Dahua