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External Antenna - Wanlin, a Chinese manufacturer and export supplier based in Shenzhen, China, builds wireless fire alarm and fire detection systems for multi-level commercial and mixed-use buildings, occupied retrofits, heritage and listed buildings, construction sites and temporary estates, industrial plants, warehouses, data centres, hospitals, schools a···

gas alarm with wireless Hart direct from Wanlin Fire Protection — 12-year factory experience, WL-GA202 4G gas detector certified CE/EN50194/UL2075/FCC. Key specs: Catalytic Gas Sensor + Photoelectric Smoke Sensor + 4G Cat.1 Dual-Channel Communication, 4G LTE Cat.1 + Cloud Platform + Dual Alarm Channel (Gas + Smoke) + SMS/Push/Email + Valve Control. Catalyti···