subway smoke detector

Wanlin Fire - China source manufacturer for subway smoke detector. Featured model WL-TH-GW (IoT Gateway & Cloud Platform): IoT gateway + cloud platform bundle (LoRa + 4G + dashboard); 500 devices per gateway, 10 gateways per site license; Cloud dispatch engine: push / SMS / email / voice + escalation ladder; -20 to +60 deg C, 10-95% RH. Full lineup: smoke an···