Operation Temp 0 to 50°C
Operation Humidity Max 90% relative humidity
Slope Recongition +/-20% at PH4 & PH10
Offset Recognition +/-60mV at PH7
Input Impedance 1012ohms
Battery Type DC 9V
Battery Life Approx 200hrs
Meter Size 164 x 83 x 35mm
Weight 350gm