Feature superior environmental & safety protection. The fast responding LED indicators update in less than one-tenth of a second to let you know that there are dangerous voltages present. Easy to use when wearing gloves, these testers have large buttons, bright indicators and clear audible & sensory indicators. Heavy duty moulded cases, double insulated test leads with a wear indicator and a probe dock. 2 year guarantee. Voltage: 12V - 690V Continuity: 0 - 400k Frequency: 0-60Hz Safety rating: CATII 690V CAT III 600V IP rating; IP54