protmex pt6508 temperature humidity meter thermometer hygrometer with ambient,dew point, wet bulb for indoor and outdoor, min/max hold, lcd backlight protmex <b>product description:</b><br> this digital thermometer hygrometer is a battery meter for measuring relative humidity and temperature. <br> the thermometer hygrometer can display three types of temperatures around the sensor's air via several convenient procedures: the ambient temperature, the dew-point temperature and the wet bulb temperature. <br> <br><b>product description:</b><br> ●data hold<br> ●display back light<br> ●max/min<br> ●data logging up to 100 groups<br> ●low battery indication<br> <br><b>product specification:</b><br> ambient temperature: -20 to 0°c (-4 to 32°f) 0.1°c/°f (±1.5°c) -0 to 45°c (32 to 113°f) 0.1°c/°f (±0.5°c) 45 to 60°c (113 to 140°f) 0.1°c/°f (±1.5°c)<br> realtive humidity: 0%-20% 0.1% (±4.0%) 20%-80% 0.1% (±3.0%) 80%-100% 0.1% (±4.0%)<br> wet bulb temperature: -20 to 0°c (-4 to 32°f) 0.1°c/°f (±1.5°c) -0 to 45°c (32 to 113°f) 0.1°c/°f (±0.5°c) 45 to 60°c (113 to 140°f) 0.1°c/°f (±1.5°c)<br> dew point temperature: -50 to 0°c (-58 to 32°f) 0.1°c/°f (±1.5°c) 0 to 45°c (32 to 113°f) 0.1°c/°f (±0.5°c) 45 to 60°c (113 to 140°f) 0.1°c/°f (±1.5°c)<br> power supply: 4x1.5v aaa batteries<br> product size: 184mm×60mm×29mm(7.2”x.4”x1.1”)<br> product weight: 190g(0.41lb)<br> category: ce<br> packing size: 230*110*56mm<br> packing weight: 280g<br> <br><b>package include:</b><br> 1*pt6508 temperature and humidity meter<br> 1*user manual