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Wireless Smoke Detector for School - Wanlin, a Chinese manufacturer and export supplier based in Shenzhen, China, builds Hong Kong wireless fire alarm and fire detection systems: LoRaWAN and RF 433 MHz wireless gateways with 4G or Wi-Fi uplink, battery-powered wireless call points and smoke and heat detectors, mains-powered alarm units with 2-hour UPS backup···

CO Alarm with Multi Color LED 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 Saudi Arabia. Contact: wanlinfirecontrol@163.com