TIS 851 Electrical Voltage & Continuity AC/DC LED Tester & Case- (Self Proving)
Internal Battery Consumption Approx. Continuity / Diode Test: Optical & Acoustical. proving test that conforms fully to BSEN 61243-3:2010 and HSE GS38 12B. Will not trip RCD when connected Live toEarth Loud Continuity Buzzer.