Feature:1. SMART SWITCHING: With AL smart automatic mode, the 4000 count smart multimeter allow you to quickly switch between all measurement tasks, including AC DC voltage, resistance, and continuity, without having to choose a mode or range. Make the measurement work easy, fast and accurate2. NON CONTACT MEASUREMENT: Completely safe non contact voltage test, multimeter with visual and auditory alarm, save time and safe. You can measure voltage on AC wires without connecting wires, making line troubleshooting easier3. SAFETY PROTECTION: Meet Class II 600V, CE and RoHS certification. The multimeter adopts overload protection measures to improve product safety and maximize user safety. The external silicone cover protect the multimeter from damage and potential electric shock4. MULTIPLE FUNCTIONS: Multimeter supports data hold, automatic shutdown, low power indicator, backlight display, flashlight. All of these convenience features make the instrument adequate for everyday use by hobbyists, car owners and homeowners. Easy to use and enjoy endless DIY fun5. SWITCHABLE BATTERY: Digital multimeter tester with separate LED lights for easy work in the dark. The dashboard can be replaced with a battery, unscrew the bottom screw, and then slide the shell down and replace with fresh electricitySpecification:Item Type: Digital MultimeterModel: HT123Material: ABSBattery: 2 x 1.5V AAA(not included)Function: Measure AC DC voltage, voltage, continuityNote: Current cannot be testedOperating Temperature and Humidity: 0~40℃(<80%Rh, <10℃ non condensing), Altitude: <2000meterStorage Temperature And Humidity: -10~60℃(<70%Rh, take out the battery)Overrange Indication: Display "OL"Maximum Count: 4000Sampling Rate: 3 Times per secondData Retention: YesDisplay With Stalls: YesNCV Non Contact Detection: YesData Retention: YesBattery Undervoltage Indication: YesAutomatic Shutdown: YesFlashlight: YesBasic Parameters: DC Voltage: 4V: 0.001V resolution40V: 0.01V resolution400V: 0.1V resolution600V: 1V resolutionMeasurable Voltage: 0.8~600V; Overload Protection: 600V; Maximum Measured Voltage: 600VAC Voltage: 4V: 0.001V resolution40V: 0.01V resolution400V: 0.1V resolution600V: 1V resolutionMeasurable Voltage: 0.8~600V; Overload Protection: 600V; Value Ranges: 40~1000HzResistance: 4KΩ: 0.0011kΩ resolution40KΩ: 0.01KΩ resolution400KΩ: 0.1KΩ resolution4MΩ: 0.001MΩ resolution40MΩ: 0.01MΩ resolutionOverload Protection: 250VOn Off Test: Resistance < about 50Ω, buzzer sound, indicator light green.Package List:1 x Multimeter2 x Test Pen1 x User Manual