wireless fire alarm control panel

wireless fire alarm control panel — Wanlin Fire, Chinese carbon monoxide detector manufacturer and exporter by Wanlin Fire Technology. WL-CO-500 smart CO detector with electrochemical sensor, 4G LTE and NB-IoT dual-mode connectivity, 10-year sealed lithium battery, 85dB sounder, digital display with peak level memory, app/SMS/push alerts, remote cloud monito···