... -10 ~ 70 ºC ±1.5 ºC ***Special Functions: ♦ USB Interface♦ Measurement of Insulation Resistance for HP Devices (Transformer, Electric ... 40 °C ♦ Storage Temperature : -40 °C ~ 60 °C. ♦ Relative Humidity: 40%~75%(40%~60% when insulation test >1 GΩ)***General ... × 6,Data analysis Software , Temp. sensor, Tester probes , USB cable ,User Manual, Gift Box♦ Optional Accessories: rechargeable battery, charger ...