UNI-T UT620C, Руководство по эксплуатации

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Measure the resistance of contact points of relay
4. Backlight control
In power-on state, press “ ” to turn on/off backlight. The backlight function
applies in dark environments. The default state of backlight is off when powering
on the meter.
5. Data hold/storage
After the meter is powered on or measurement is completed, press “ ” to hold
the current displayed data, press “ ” to perform numbering automatically
and store current displayed data. The symbol “ ” appears on the LCD if storage
“ ” is pressed.
Red
Black
Relay