... . It can be widely used for continuously measuring multi-parameters of the gases existing in special environment such ... , oxygen, carbon monoxide, sulfured hydrogen, temperature, and humidity. Multi-parameter detect alarmMain specificationsItemSpecificationDisplay modeLCDSound & light alarmIntermittent sound & light ... 10-6±5% True valueTemperature(-20~80)±1 Deg C'0.1 Deg C'Humidity(0~100)%RH±3%RH1RH