Features: The rated test voltage is 1000V, with a measurement range of up to 2000M and capable of measuring AC voltage. Wide measurement range with a locking button for easy selection and use. Can measure AC voltage up to 500V with full-scale linear indication. Low resistance buzzer alarm alerts you to pay attention. Battery voltage status indicator light (BATT CHECK) also functions as a high voltage indicator during megohmmeter operation. Includes an external DC power supply (charging) socket for added convenience. Widened dial design provides a broader indication range for more accurate fault diagnosis. Dial illumination function allows for easy use in low-light environments and accurate reading of measurements. Automatic discharge function: Automatically discharges residual charge after measurement to prevent electric shock. Strong output load capacity with a maximum output short-circuit current of 1.1mA. Features a transistor withstand voltage measurement scale to directly read the withstand voltage value of the tested material. Fully functional, high accuracy, convenient and reliable operation, making it an excellent electrician's testing instrument. Comes with a pair of test leads, alligator clips, and a high-quality zipper storage bag. Used for measuring the insulation resistance of various electrical equipment and insulation materials such as transformers, motors, cables, switches, and appliances, as well as for maintenance, testing, and verification of electrical systems. Specifications: Material: ABS Rated Test Voltage: 1000V Output Voltage: 90120% of rated test voltage Output Short Circuit Current: Max. 1.1mA Measurement Range: 02000M Transistor Withstand Voltage Measurement: 1000V (1.0mA) Discharge Resistance: 10M Automatic Alarm Threshold: 50M Operating Temperature/Humidity: 040C,