ota update

4G CO Detector with Tamper Proof China manufacturer. UL 2034 and EN 50291 certified CO alarm with electrochemical sensor, 4G wireless monitoring, 10-year sealed battery, OEM/ODM, wholesale, global shipping to Israel. Contact: wanlinfirecontrol@163.com

NB-IoT Temperature Monitoring System China manufacturer. Fixed temperature and rate of rise heat detection with EN 54-5 UL 521 CE certification. 4G wireless, IoT smart monitoring, OEM/ODM, wholesale, global shipping to Israel. Contact: wanlinfirecontrol@163.com