Wanlin Fire - China source manufacturer for LPG gas detector. Featured model WL-TH-MCP (Manual Call Point & Sounder Strobe): Break-glass manual call point, EN54-11 Type A; Positive break contact, tamper-switch monitored; Zone short to panel + optional 95 dB at 1 m sounder; -10 to +55 deg C, 0-95% RH. Full lineup: smoke and heat detectors, CO and gas detector···