Sefelec,  a leader in Electrical safety testing and Harness Tester, is manufacturing a wide range of Safety tester (made of Ground bond tester + Megohmmeter + Hipot tester + line leakage tester ), Cable Tester (also called Backplane tester), and T&M devices such as microhmmeter, milliohmmeter, teraohmmeter (very high insulation resistance test), high voltage tester (also called dielectric withstand tester).