Select Button; Hold Function; Automatic Power-Off; Battery Test When Switching On - VOLTCRAFT VC-22 Operating Instructions Manual

10. Select button

The SELECT button is used to change the function of the measuring range.
Voltage measurement V
Resistance / Continuity check
Temperature measurement mode

11. HOLD function

The hold button (9) allows the measured value to be recorded on display. The symbol "H" ap-
pears in the display. This facilitates the reading or is for documentation purposes. Press again
to switch back to measurement mode. The Hold function is not available with the non-contact
AC voltage test "NCV".

12. Automatic power-off

The DMM automatically shuts off after approximately 15 minutes. To switch on again, press any
key or turn the rotary switch once to the "OFF" position and then select the desired measure-
ment range again.
About 1 minute before the automatic power-off, the buzzer sounds five times in suc-
cession; before shutting down, a long beep sounds.

13. Battery test when switching on

When the DMM is switched on, the current battery voltage is indicated by the colour of the NCV
LED (1) for approximately 2 seconds:
Green voltage > 2.7 V
Yellow voltage 2.4 V - 2.7 V
Red voltage < 2.4 V
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Function switching between AC and DC measure-
ment mode
Function switching between resistance measure-
ment and continuity test
Function switching between °C and °F