... humidity logger is widely used in the medical industry, electronic industry, food industry, the transport industry, the meteorological industry, textile industry, HVAC ... or °F .Measure temperature and humidity with internal or external sensor. Capacity 16,000-86,000 data ... range0~100%RH TECHNICAL PARAMETERSResolutionTemperature: ±0.1C, humidity: ±0.1%RHPower supply9V block batteryDisplayLarge lcd ...