feature: 1. It adopts LCR digital bridge for resistance measurement and insulation resistance test, insulation resistance and voltage measurement are accurate, reliable and easy. 2. Wide measurement range, voltage: 250V/500V/1000V DC. , Resistance: 0.1MΩ～2000MΩ. 3. Large LCD backlight display, test lock, easy to read data, the maximum display number is 1999. It has many advantages such as portability, wide measurement range, backlit display, test lock and so on. 4. Stable performance, LED light indication, automatic shutdown and low battery indication. Advanced appearance, stable performance, can also be used for electricity measurement 5. Wide range of applications, such as insulation resistance testing of transformers, motors, cables, electromechanical equipment, communication equipment, switches and electrical devices. specification: Material: ABS plastic Color: red, green (optional) Dimensions: 165 x 120 x 57mm/6.5 x 4.72 x 2.24in Power: 8 x 1.5V AA batteries (not included) Maximum display: 1999 units technical parameter: Function Measurement Range Basic Basic Accuracy Output voltage 250V / 500V / 1000V ± 10% Test current 250V (r = 250K Ω) 1mA ± 10% 500V (R = 500kΩ) 1mA ± 10% 1000V(R = 1MΩ) 1mA ± 10% test Resistive Insulation 250V: 0.1 MΩ - 20m Ω ± (4% ± 2) 500V: 0.1 MΩ-50 MΩ ± (4% ± 2) 1000V: 0.1MΩ-100MΩ±(4%±2) 250V: 20mΩ-500MΩ±(4%±2) 500V: 50mΩ1000mΩ±(4%±2) 1000V: 4%mΩ-MΩ±(±2) Short circuit current Median resistance 250V / 500V: 2m Ω 1000V: 5MΩ AC 750V ± (1% + 6) Package Included: Megohmmeter*1 Test lead line*1 Alligator clip*1 Manual*1 Notice: Due to differences in displays and lighting effects, the actual color of the item may vary slightly from the color shown in the pictures. Thanks Due to manual measurement, please allow 1-2cm measurement deviation.