The 2 in 1 digital Humidity & Temperature Meter & Wet Bulb Temperature Dewpoint Temperature has been designed to combine the functions of humidity meter temperature meter wet bulb temperature and dewpoint temperature.</br>It is an ideal Humidity & Temperature Meter instrument with scores of practical applications for laboratory industrial engineer and professional.</br>The humidity & temperature meter is for use a humidity/ semiconductor sensor.</br>Dual Display Temperature & Humidity; Resolution 0.01%RH 0.01 ?C/0.01 ?F.</br>Max Hold and Data Hold Function; Auto Power Off Disable Sleep Mode.</br></br>Product Description</br></br><b> Specifications: </b><p/> ? Display: Large 4-1/2 dual digital LCD display <br> ? Sensor Type: A single chip relative humidity and temperature muti sensor module comprising a calibrated digital output. <br> ? Response Time: %RH: 10S (90% at +25 ?C still air) <br>? Accuracy Note: Accuracy is specified for the following ambient temperature range: 64?F to 82?F (18?C to 28?C) <br> ? Sampling Rate: 2.5 samples per second <br> ? Polarity: Automatic (-) negative polarity indication <br> ? Dewpoint Temperature: -20 ?C~80 ?C (-4 ?