ITEM NAME:Practical Temperature And Humidity Meter Fr Industrial Electronic Environment sa Descriptio n Features: 1). With highly accurate temperature readings and extremely sensitive humidity sensor, the humidity meter HC520 is perfect household device. Not just reliable readings, the temperature and humidity monitor is equipped to give you the record of min/ max humidity/temperature. 2). Meters Sensor Wire is available. If the sensor wire is plugged into, the outdoor temperature is metered. Thus, it is easy to get indoor and outdoor temperature. 3). It will quickly inform you of the comfort level (DRY, COMFORTABLE, or WET) in the room based on the humidity and temperature. Button function: 1.)Push 'IN-OUT' button to select to show INSIDE or OUTSIDE temperature (IN or OUT will be indicated on LCD screen). 2.)Push 'MAX-MIN' button to show recorded MAXIMUM or MINIMUM temperature and humidity value (MAX or MIN will be indicated on LCD screen). 3.) Push '℃/℉' button to change temperature display unit 4.) Push 'RESET' button to make all setting and recorded values to the original ones. Specification: Material: ABS plastic + electronic components Color: silver Packing size: 10X8X2cm Temperature measurement range: (indoor) -10-+50Â °C (+14-+122Â °F) Temperature measurement range: (outdoor) -50-+70Â °C (-58-+158Â °F) Humidity measurement range: 20%~99%RH Temperature measurement accuracy: Â ±1Â °C (-20~60Â °C), Â ±2Â °C (others) Humidity measurement accuracy: Â ±5% RH (20%~99%, 25Â °C) Resolution: 0.1 Â °C / 1% RH Storage.It will quickly inform you of the comfort level (DRY, COMFORTABLE, or WET) in the room based on the humidity and temperature. Push 'MAX-MIN' button to show recorded MAXIMUM or MINIMUM temperature and humidity value (MAX or MIN will be indicated on LCD screen).