fire detector replacement service

fire alarm engineering design — Wanlin, 12-year Chinese smart fire protection manufacturer, WL-SFP600 (Smart Heat Detector with LoRaWAN) certified UL/FM/CE/EN54/NFPA 72. Fixed Temp + Rate-of-Rise + LoRaWAN 15km + Ultra-Low Power. OEM/ODM from 500 units, factory direct pricing 50-70% below Western brands, 60+ countries.