This portable appliance tester was launched in 2003 by Tele-Products Ltd and later
branded for First Stop Safety. It was one of the first testers to feature a separate
button for Class 1, Class 2 appliances and Power Cords. All the user had to do was
to decide the Class of the appliance and press the correct button.
PAT-IT V3 tested for Earth Continuity, Insulation Resistance and Earth Leakage current.
PAT-IT V4 tested for Earth Continuity and Insulation Resistance only.
Both versions tested IEC leads and mains extension leads for Earth Continuity and