fire door closing indicator

fire door monitor for cinema direct from Wanlin Fire Protection — 12-year factory experience, WL-FD105 fully certified EN 1155/NFPA 80/CE/FCC/RoHS/REACH. Key specs: 4G LTE Cat.4 + Ethernet + WiFi, Multi-Door Network + Cloud Management, Gateway AC powered + 48h backup; sensors battery-powered. MOQ 100 units, 25-30 working days, OEM/ODM custom branding availa···

fire door monitor insurance approved direct from Wanlin Fire Protection — 12-year factory experience, WL-FD103 fully certified EN 1155/NFPA 80/CE/FCC/RoHS/REACH. Key specs: NB-IoT (LTE Cat-NB1), Ultra-Low Power Position Sensor + NB-IoT, 10-year sealed lithium battery (non-replaceable). MOQ 100 units, 25-30 working days, OEM/ODM custom branding available. Se···