Supply moisture meter and sound level meter,etc.

More info:

Dew Point Meter

The 821 dew point meter can be used to measure dew point,temperauture and humidity. With battery powered,the dew point meter has a digital display and can be easily held by hand.The dew point meters are wilde used in office,home,warehous,lab room,control house,libraries,workshop house,etc.

Features:
1.Measure air humidity and temperature
2.Calculate dow point and wet bulb temperature
3.Value, Max value and Min value held
4.+/-3r RH accuracy
5.Backlight function
6.Auto Power Off

Specification:
Durable and stable capacitance humidity sensor with high accuracy.
NTC temperature sensor
Measure range:
   0 ~ 100%RH (at 25oC)
   0 ~ 50oC/+32 ~ 122oF
Accuracy(+/-1 digit): +/-3%RH(5-95%RH)
                                 +/- 0.5 Deg C.
Resolution: 0.1% RH; 0.1 Deg.C.
Repeatability: +/-2%
Response time:5 second(33%-76%RH, Enclosed environment)
Operating temperature:0-50 Deg.C.
Storing and shipping temp.:-10-60 Deg.C
Power:1×9V(6F22) battery
Dimension:160×74×35mm
Weight:250g(including battery)
Packing: gift box+PP Box