1. Measuring range: AC voltage 0-440V 2. Battery type: 6x1.5V LR14 battery 3. Test voltage: 0~440V 4. Ambient temperature: 0~50 degrees Celsius 5. Relative humidity: 30%~90% 6. Simple operation and accurate test 7. Large-screen backlight display, large fonts, large strokes, clear readings in dim environments 8. It is designed with a detachable PVC silicone protective cover, which is shockproof and drop-resistant, strong, wear-resistant and durable, and protects internal components 9. It can widely measure leakage switch tripping current, tripping time, loop resistance and online measurement voltage, frequency, etc. It is an ideal tool for electrical inspection and maintenance
