power supplies, after detecting the lithium battery power depletion, it will automatically switch to dry battery for power supplying. Widely Appications: Widely used in the electrical testing industry, electrician industry, electronic overhaul industry, LED industry, auto repairing industry, and so on. Specifications: Name: Digital Multimeter Material: ABS Color: red, green, black(optional) Battery: 1 * built-in 3.7V, 1100mAh lithium battery (included), or can be powered by 2 * AAA battery (not included) DCVoltage: 0-620V (DCMode), 0.5-620V(AutoMode), 0.001V, (0.8%+3) ACVoltage: 0-620V (ACMode), 0.8-620V(AutoMode), 0.001V, (1.2%+5) Resistance: 0.0-9.999, 0.1, (1.2%+3) Capacitance: 0.5uF-999.9uF, 0.1F, (3.5%+8); 1000uF-9999uF, 1F, (4.5%+10) AC Current: 1-610mA(40-200Hz), 0.1mA, 2.0%+3) DCCurrent: 1-610mA, 0.1mA, (1.5%+3) Frequency: 10.0-99.9Hz 0.1Hz, 100-1000Hz 1Hz, (1.0%+5) Infrared temperature measurement: -20 to 0(-4 to 32 0.1() (3.0%+2(); O-400(32-752) 0.1() (2.5%+3()) Temperature: 0-50, 1(), 2() Continuity: If the resistance 30 the buzzer sounds Low voltage diode mode: Measure diodes within 2.0V High voltage diode mode: Open circuit voltage 15V, test current 1mA. (Online testing is prohibited, otherwise high voltage output may damage low-voltage devices) V-Alert: support Live wire check: Support Auto power off: 5 minutes Flashlight: Support Item size: 78 * 161 * 21mm / 3.07 * 6.34 * 0.83in Item weight: 245g / 8.64ounce Package size: 183 * 98 * 48mm / 7.20 * 3.86 * 1.89in Package weight: 441g / 15.56ounce Packing List: 1 * Digital Multimeter with Cover 1 * USB Cable 1 * Pair of Test Cable 1 * Screwdriver 1 * User Manual 1 * Carrying Bag