window sensor with NB IoT

Window Sensor for Rental Property 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 Brazil. Contact: wanlinfirecontrol@163.com

home security system with smart lock direct from Wanlin Fire Protection — 12-year factory experience, WL-HS103 certified CE/FCC/RoHS/REACH/ISO9001/NFPA 72. Key specs: 4G + WiFi + AI Video Analytics Smart Hub, 4G + WiFi + Video Stream + Two-Way Audio + Push + SMS. No monthly fees, 4G cellular backup, DIY installation, expandable to 50-100+ sensors. MOQ 100 k···