• Small size design, which can be put into wired detector easily • 868MHz two-way wireless communication • LED display, show the real status of device • With one tamper input and one PGM, can be used as zone input or alarm outpout • With 3.3v voltage output, can be used to power up external wired detector • Detection of device removal by accelerometer • Installation methodPut inside Wireless Ready Detector • Dimension(WxHxD)102*41*20mm • 35g(Without Battery), 90g(With Battery)