Item Type: Rechargeable Digital Multimeter_x000D_ Material: Plastic_x000D_ Auto Mode: Can automatically identify AC voltage, DC voltage, resistance_x000D_ Display: Color LCD_x000D_ Maximum Display Value: 9999 digits_x000D_ Polarity Indication: Automatic indication, - means negative polarity_x000D_ Overrange Display: 0L or -0L_x000D_ Sampling Rate: About 3 times per second_x000D_ Automatic Shutdown Time: 5 minutes_x000D_ Low Battery Indication: LCD display symbols_x000D_ Standby: When there is no measurement signal input, the screen brightness will be reduced after about 10 seconds_x000D_ Working Temperature and Humidity: 0-40C, 0-80%RH_x000D_ Storage Temperature and Humidity: -10-60C, 0-70%RH_x000D_ Power Supply: Built in 700mAh lithium battery (built in)_x000D_ Working Height: Maximum 2000m_x000D_ Input Resistance: 10M_x000D_ Maximum Input Voltage: 620V_x000D_ Frequency Range: 1KHz(