door sensor with NB IoT

Motion Sensor with Bluetooth China manufacturer. 4G smart fire safety system with CE UL EN54 RoHS FCC. IoT fire detection, cloud platform, wireless interconnect. OEM/ODM, wholesale, global shipping to Mexico. Contact: wanlinfirecontrol@163.com

door sensor with Bluetooth direct from Wanlin Fire Protection — 12-year factory experience, WL-HS101 certified CE/FCC/RoHS/REACH/ISO9001/NFPA 72. Key specs: 4G + WiFi + Zigbee Multi-Protocol Smart Hub, 4G + WiFi + Zigbee + SMS + Push + Voice Alert. No monthly fees, 4G cellular backup, DIY installation, expandable to 50-100+ sensors. MOQ 100 kits, 20-25 worki···