BSIDE Multimeter Intelligent Large Display Electromagnetic Radiation Multifunctional Voltage Tester S20 Item Type: Multimeter Material: Plastic Auto Mode: Can automatically identify AC voltage, DC voltage, resistance. Display: Color LCD Maximum Display Value: 9999 digits. Polarity Indication: Automatic indication, - means negative polarity. Overrange Display: 0L or -0L Sampling Rate: About 3 times/second. Automatic Shutdown Time; 5 minutes. Low Battery Indication: LCD display symbol. Standby: When there is no measurement signal input, the screen brightness will be reduced after about 10 seconds. Working Temperature and Humidity: 0-40°C, 0-80%RH Storage Temperature and Humidity: -10-60°C,0-70%RH Power Supply: Built in 700mAh lithium battery (delivered with built in battery) Working Height: Up to 2000 meters Input Resistance: 10MΩ Maximum Input Voltage: 620V