Features Store 100 sets of test results: RCD loop resistance tester integrates the latest technology into a compact, sturdy, durable, easy-to-use, and easy-to-carry instrument, and can store 100 sets of test results Application: Digital resistance meter has high reliability, stability and accuracy, and can measure trip current, trip time, contact voltage, loop resistance Multiple functions: RCD loop resistance tester has multiple functions, with backlight indication, automatic shutdown, automatic/manual range, overheating warning, low battery voltage warning function USB2.0 interface transfer to PC: Digital resistance multimeter is an ideal tool for electrical inspection and maintenance. The data stored in the host can be transferred to the PC through the USB2.0 interface Current multiples: The standard/selective current measuring rods used by the RCD loop tester range from 10, 30, 100, 300, 500 mA, and can be used at an altitude of 2,000m CAT III 600V; 3000 CAT II 600V, and the multiple of the measured current is 0.5, 1, 5 Package List 1 * RCD/LOOP Tester MS5910(batteries not included) 1 * Test Lead 3 * Crocodile Clip 1 * USB Cable 1 * CD 1 * Instructions 1 * Black Bag 1 * Lanyard