1. Measuring range: AC voltage 0-440V2. Battery type: 6x1.5V LR14 battery3. Test voltage: 0~440V4. Ambient temperature: 0~50 degrees Celsius5. Relative humidity: 30%~90%6. Simple operation and accurate test7. Large-screen backlight display, large fonts, large strokes, clear readings in dim environments8. It is designed with a detachable PVC silicone protective cover, which is shockproof and drop-resistant, strong, wear-resistant and durable, and protects internal components9. 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 maintenanceNote: This product is shipped without batteriesSpecification: General Certificate EMC, LVD Package Weight One Package Weight 2.05kgs / 4.52lb One Package Size 33cm * 27cm * 9cm / 12.99inch * 10.63inch * 3.54inch Qty per Carton 10 Carton Weight 20.46kgs / 45.11lb Carton Size 52cm * 35cm * 37cm / 20.47inch * 13.78inch * 14.57inch Loading Container 20GP: 396 cartons * 10 pcs = 3960 pcs40HQ: 919 cartons * 10 pcs = 9190 pcs