GSM gas detector

4G LTE smoke detector — Wanlin, 12-year Chinese smart fire detector manufacturer, WL-SM601 (NB-IoT Smart Photoelectric Smoke Detector) certified UL/CE/EN54. Photoelectric + NB-IoT + Ultra-Low Power + 10-Year Battery + Cloud Platform. 10-year battery, 4G/NB-IoT/LoRaWAN, OEM/ODM from 500 units, factory direct pricing 50-70% below Western brands.

gas sensor for heating system direct from Wanlin Fire Protection — 12-year factory experience, WL-GA207 4G gas detector certified CE/EN50194/UL2075/FCC. Key specs: Catalytic Gas Sensor + Voice Alert + 4G Cat.1 + Smart Home Integration + WiFi/BT, 4G LTE Cat.1 + WiFi + Bluetooth + Cloud Platform + Voice Prompt + Smart Home Hub + SMS/Push + Valve Control. Cata···