UL 521 heat detector

Wanlin Fire - China source manufacturer for theater smoke detector. Featured model WL-TH-CO (CO & Combustible Gas Detector): Combined: electrochemical CO + photoelectric smoke chamber; EN 50291-1 CO + EN54-7 Class A2 smoke, dual criteria; 88 dB at 3 m sounder with voice-free temporal patterns + relay; -10 to +45 deg C, 0-95% RH. Full lineup: smoke and heat d···