Inputs with MICRO USB female, can be directly input to do with the phone charger rechargeable lithium battery,And still retains the input voltage wiring pads, can be very convenient DIYInput voltage: 5VCharging cut-off voltage: 4.2V ± 1%Maximum charge current: 1000mABattery over-discharge protection..
UNI-T UT501A Insulation Resistance Testers Auto Range Lcd backlight High Voltage IndicationSpecificationsRangeAccuracyModel UT501AInsulation Resistance (Ω)Test Voltage100V/250V/500V/1000V0%~10%100V0.00MΩ~100MΩ±(3%+5)250V0.00MΩ~99.9MΩ±(3%+5)100MΩ~5.5GΩ±(5%+5)500V0.00MΩ~99.9MΩ±(3%+5)100MΩ~5.5GΩ±..