fire protection

China Fire Heat Smoke Detector Supplier Spotlight: Wanlin WL··· China Fire Heat Smoke ··· 2026-05-31
Fire Heat Smoke Detector direct from Wanlin Fire Protection — 12-year factory experience, WL-SM900 fully certified CE/EN54/FCC/RoHS. Key specs: 4-wire non-addressable, 12/24VDC, relay output, cost-eff