This digital earth resistance tester is both fine-looking and practical, has more complete functions, higher accuracy, more convenient and reliable for operation and more suitable for outdoor use with dust and wet proof structure.It can test earth resistance of various earth systems including power systems, electric equipments, lightnings conductors as well as resistance value of low resistance conductor and AC voltage test. Features: large screen display, clear writing, easy to read, save time and effort, easy to measure. Digital display, low energy consumption. High accuracy and quick detection. Third gear position measurement, meet a variety of different occasions, make measurements smarter and more convenient. Overload protections, double protections, safety professional, measurement assured. Fast response measurement, measure the ground resistance for about 5 seconds, measure the grounding voltage for about 2 seconds. Protective cover design, the outer casing is made of thick material resistance to falling, dust, moisture,etc. Have a protective effect for the instrument. Easy to use, conveninet, long-lasting. Suitable for different fields. Battery compartment design, detachable design, easy to replace the battery. Specifications: Material: plastics Matched battery model: 6 * 1.5V(R6AA) 1 * 12V(23A) Measurement range: 0.5 M Ohm Earth ground resistance: 0/20/200/2000 Ohm +/- (2%+3) Earth voltage: 0~30V +/- (3%+5) Resolution: 0.01 Ohm Item size: 200 * 200 * 270mm ?/ 7.9 * 7.9 * 10.6in Item weight: 1500g / 3.3lb Package size: 300 * 220 * 220mm / 11.8 * 8.7 * 8.7in Package weight: 1780g / 3.9lb Note: battery is not included in the shipment. Packing List: 2 * Auxiliary Earth Bar 3 * 1.5m Wire 1 * Instruction Manual 1 * Tool Bag