Item Type: Resistance Tester_x000D_Model: BM500A_x000D_Material: ABS_x000D_Power Supply: 1 x 6F22 9V (Battery Not Included)_x000D_Application: Electricity numerical test_x000D_Automatic Range: Overload display "1"_x000D_Display Mode: LCD display_x000D_Maximum Display: 1999_x000D_Sampling Rate: 2.5 times/sec_x000D_Working Environment: 0C-40C, less than 75%RH_x000D_Storage Environment: -10C-60C, less than 80%RH_x000D_Rated Voltage250V/500V/1000V_x000D_Open Circuit Voltage90%~110% of rated voltage_x000D_Measuring Range0.001~1999M_x000D_Minimum Resolution0.001M_x000D_Accuracy250V: About 500k_x000D_500V: About 1.5M_x000D_1000V: About 5M_x000D_Measure the achievable resistance value to maintain the lower limit of the rated voltageNot less than 1.5mA 1The digital insulation resistance tester is made of high quality ABS material, durable, and has accurate measurement results. 2With LCD display, the measurement range can arrive 1999M, and the sampling rate can arrive 2.3 times/sec. 3The whole machine is beautiful and high grade, with stable performance, compact structure, easy to carry, and can be measured at any time. 4This resistance meter is suitable for maintenance, test and inspection of various electrical equipment. Is your ideal electrical and electronic tester. 5This product is suitable for measuring the insulation resistance of various insulating materials and electrical equipment such as motors, cables, switches, electrical appliances, etc. 1 x Tester(Battery Not Included) 2 x Clip 1 x Test Lead 1 x Manual If the back cover of the meter is not in place, it is strictly forbidden to use it. Otherwise, it may cause electric shock.