This product is a DC resistance type (pin type) material moisture meter, commonly used to measure the moisture content of wood or building materials. The moisture content of the material is displayed directly as a percentage. Note:1. Operate the product correctly within the parameters specified in the technical data sheet according to the purpose of the product.2. Due to manual measurement, the size may be slightly different. Thank you for your understanding.3. Due to different light conditions and different monitors, item color displayed in photos may be showing slightly different from real object.Specifications:Brand: HABOTESTModel: HT633Display: LCDColor: Black & RedShell Material: ABSSensor: Resistance type (conductivity measurement), high precision temperature and humidity sensorMaterial Humidity Range: 0.0~57.0%, ±2.0%Ambient Temperature: -20.0~60.0℃ (-4.0~140℉), ±1.5℃Ambient Humidity: 0.0~99.9%, ±5.0%RHUse Environment: -10~50°C / 20~90%RHStorage Environment: -10~60°C / 20~90%RHPower: 3 x 1.5V AAA Alkaline battery ( not included )Material Type Selection: Built in characteristic curves of 7 materialsData Hold: YESMAX / MIN Hold: YESAuto Power Off: YESLow Battery Indication: YESBacklight Function:Red backlight: High moisture content, showing the letter WOrange backlight: Moderate moisture content, showing the letter MGreen backlight: Low moisture content, showing the letter DItem Size: 14.2*5.8*2.6cm / 5.59*2.28*1.02in Net Weight: 115g / 4.06ozPacking Size: 18.5*9*5.5cm / 7.28*3.54*2.17in Packing Weight: 207g / 7.30ozPackage List:1 * Wood Moisture Meter1 * Cloth Bag1 * Wrench2 * Spare Measurement Pins1 * Manual ( English )