VOLTCRAFT VC-590OLED Operating Instructions Manual page 45

1 Cable selector with built-in NCV sensor
2 Current clamp
3 NCV signal display
4 Current clamp open lever
5 SELECT key for functions (red symbols)
6 Measurement display (OLED)
7 HOLD/SETUP key
HOLD = Freezes current measurement value in the display
SETUP = Access basic settings (auto power-off, OLED brightness)
8 MAX/MIN key = Displays maximum, minimum and average (AVG) values
9 COM test socket (reference potential, "negative potential")
10 VΩ test socket ("positive potential" for direct current)
11 REL/ZERO key
REL = Relative value measurement
ZERO = Set display to 0 in direct current measurement (DC-A)
12 Battery compartment
13 Rotary switch for selecting the desired measuring function
14 Key for measuring point illumination
15 Measuring point illumination
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