Refco REF-METER-OCTA Mode D'emploi page 6

REF-METER-OCTA User's Guide
Keypad
Press for power-on, press/hold for power off.
Press to cycle through displayed units.
Press to select low, medium, or high display resolution.
Press to "zero-out" current reading on display.
Use to adjust various settings and programming values/Backlight.
For faster adjustments. Used in conjunction with
"Freezes" display.
Starts programming mode
Activates / Deactivates stored program.
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