... poisonous and harmful gas leak TGas-1031 Ammonia Gas Alarm & Monoxide Alarm TGas-1031 Series Combustible, Toxic and Harmful Gas Transmitter ... mode of power supply, including centralized busbar type and independent area typel High and low concentration alarm, performing real-time ... ageing, the detector is capable of automatic recognition and alarm, so as to effectively avoid missing report. Technical ...