historical building smoke alarm

NB-IoT narrowband IoT communication direct from Wanlin Fire Protection — 12-year factory experience, WL-SFP900 smart fire detector certified CE/EN14604/EN54/UL217/UL268/FCC/QCVN. Key specs: Multi-Sensor (Smoke+Heat+CO) + 4G LTE + WiFi + Cloud Platform + Complete Installation Kit + 10-Year Design, 4G LTE Cat.1 + WiFi + Cloud Platform + Mobile APP + Complete ···

RoHS environmental compliance direct from Wanlin Fire Protection — 12-year factory experience, WL-SFP200 smart fire detector certified CE/EN14604/EN54/UL217/UL268/FCC/QCVN. Key specs: Photoelectric Smoke Sensor + Electrochemical CO Sensor + NB-IoT Cellular Communication + Multi-Sensor Fusion, NB-IoT + IoT Cloud Platform + Dual Alarm (Smoke + CO) + SMS/Push/···