9
1 Schuko test socket for connecting DUT
2 Pushbutton for testing class 1 (protection) devices (protective conductor and touchable conductive parts
connected)
3 Pushbutton for testing class 2 type devices (devices without protective conductor and with accessible conductive
parts) and for testing of class 3 type devices (safety low voltage)
4 Pushbutton for testing the protective conductor current (using differential measurement) or the contact current
(using direct measurement) when DUT is supplied with 230 V AC
5
Insulation resistance measurement: pushbutton for setting the test voltage (250 V DC or 500 V DC)
6 Pushbutton for testing RCCB/RCD breakers
7 Pushbutton for testing 3-phase devices with (optional) 3-phase adapter
8 Display
9 4 mm test socket (to be used with test lead with alligator clip)
10 IEC 60320 C14 connector for connecting the IEC low-power cable (C13) or for connecting optional measurement
3-phase adapter (16 A CEE adapter)
11
IEC 60320 C20 connector for connecting mains voltage (230 V, 50 Hz) or for voltage measurement at external
earthed sockets
12 USB-C connector (memory operations)
13 Pushbutton for recording last measurement results
14 Pushbutton for reading saved measurement results
15 Power & Backlight On/Off pushbutton