The mercury TT01 is an encapsulated multi-test screwdriver. It represents the latest innovation in safety testing. The Mercury TT01 multi tester screwdriver is IP44 rated, comes with 2 x AG3 batteries which give 5 hours of continuous operation. the voltage range is 70 - 250Vac direct contact, 70 - 600Vac indirect. The Mercury TT01 also has microwave leakage detection and it detects break points in cables. The TT01 can test fuses and various electronic components. Full instructions are supplied.