supply of digital multifunction (installation) tester.digital multifunction (installation) tester.,supply of digital multifunction (installation) tester having a function of fault loop impedance measurement with rc d non trip feature prospective earth fault and short circuit current measurement with a voltage measurement range of 500v, insul ation resistance measurement (test voltage range from 100v to 1000v), continuity and line resistance measurement, earth resista nce measurement using 2 pole and 3 pole with accessories, rcd testing for type ac, a, b and programmable rcd, bluetooth conn ectivity, internal memory for test data storage, rechargeable battery [ warranty period: 30 months after the date of delivery ] ]