【Key Features】： Automatic digital display, intelligent detection, isolated operation, power supply inspection, safety device, intelligent digital display； 【No current】: white interface, no voltage 【Live wire】: Rojointerfaz, high voltage 【Zero line】: Verdeinterfaz, low voltage 【Brand】: BSIDE 【Model】: A1 【Color】: Black 【Shell Material】: ABS 【Display】: LCD 【Maximum Display Value】: 2000 Digits 【Polarity Indication】: Self-indicating, '-' means negative polarity 【Over-range Display】: 'OL' or '-OL' 【Sampling Time】: The meter figures show about 0.4 seconds 【Automatic Power Off Time】: 5 minutes 【Battery Low Voltage Indication】： LCD display symbol 【Operational Temperature】: 0~40℃ / 32~104℉ 【Storage Temperature】: -10~60℃ / -4~140 ℉ 【Operating Altitude】: ≤ 2000m 【Battery】: 1.5V AAA x 2 ( Not Included ) 【Automatic Measuring Range】: YES 【Full Measuring Range Overload】：YES 【Protection】: YES 【Flashlight】: YES 【V-Alert (NCV)】: YES 【Live / Neutral Wire Check】: YES 【Breakpoint Locate】: YES 【Automatic Identification】: YES    A1 fully automatic intelligent digital multimeter fully automatic defrosting, easy to operate, it is recommended to easily compare circuit faults and solve wiring problems