auditorium smoke alarm

compatible smoke detector — Wanlin, 12-year Chinese smart fire detector manufacturer, WL-SM602 (LoRaWAN Smart Photoelectric Smoke Detector) certified UL/CE/EN54. Photoelectric + LoRaWAN 15km + Ultra-Low Power + 10-Year Battery. 10-year battery, 4G/NB-IoT/LoRaWAN, OEM/ODM from 500 units, factory direct pricing 50-70% below Western brands.

Singapore smart home smoke detector direct from Wanlin Fire Protection — 12-year factory experience, WL-SM606 4G standalone smoke detector certified CCCF/GB 20517-2006/CE/UL 217/EN 14604. Key specs: Dual Wavelength Photoelectric + Infrared + Blue LED + 4G Cat.1 + Multi-Criteria Algorithm, 4G LTE Cat.1 + Cloud Platform + Multi-Criteria Detection + SMS/Push/Em···