Portable Insulation Tester 250V 500V 1000V with HD LCD Display for Electrician Tools Features： 1、High-Definition LCD Display: The tester features a high-definition LCD display with a built-in backlight, allowing for easy reading of measurements in both brightly lit and dark environments and ensuring clear visibility of values at all times. 2、Multi-Voltage Level Design: Unlike traditional hand-cranked meters, this digital insulation resistance tester is designed with multiple voltage levels, allowing it to meet a wider range of voltage testing requirements. 3、High Accuracy: The insulation resistance tester boasts a high level of accuracy, with a range of ±(3%+5dgt) for 0.00MΩ-99MΩ and ±(5%+5dgt) for 100MΩ-11.0GΩ, ensuring precise measurements and reliable results. 4、Buzzer Alarm: The insulation tester is equipped with a buzzer alarm that sounds when the insulation resistance of the device being tested falls below 4MΩ. 5、Wide Application: The insulation resistance tester can be used in a variety of applications, including electromechanical installation testing, cable testing, electrical equipment testing, power transmission testing, insulation fault detection in new energy vehicles, and insulation testing in new energy vehicles. Specification： Specifications: Item Name: Digital Insulation Resistance Tester Main Material: Plastic Power Supply: 1.5V AA Battery * 6pcs (Not Included) Color: Orange Size: 16.5*10.5*6.3cm/6.5*4.13*2.48inch Rated Voltage: 250V Maximum: 5.5GΩ, 500V Maximum: 5.5GΩ, 1000V Maximum: 11.0GΩ Range of Accuracy: 0.00MΩ-99MΩ: 士(3%+5dgt), 100MΩ-11.0GΩ: 土(5%+5dgt) Measuring Range: 0.00MΩ~11.0GΩ (When the value is less than or equal to 4.0 MΩ, the buzzer alarms) DC Open Circuit Voltage: 250V士10%, 500V土10%, 1000V士10% Rated Test Current: 250KΩ load 0.9mA~1.1mA; 500KΩ load 0.9mA-1.1mA; 1MΩ load 0.9mA~1.1mA Short Circuit Current: ≤Approximately less than 1.8mA AC Voltage Test Measuring Range: AC30V- AC750V (50Hz/60Hz) Resolution: 1V Precision: 土(2%+3dgt) Package Size: 23*15*7cm/9.06*5.91*2.76inch Package Weight: 770g/1.7lb Package List： 1 * Insulation Resistance Tester 2 * Test Lead 2 * Crocodile Clip 1 * Resistor 1 * Carrying Bag