Checkline DFX-7 - Manual (Page 38)

Dakota Ultrasonics
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which transducer is being used as follows: Coating Off (P-E), Coating On (PECT),
Temp Comp (PETP), Thru Coat (E-E), Thru Coat Verify (E-EV), and Coating Only
(CT).
3.20 ON/OFF Key
The ON/OFF key simply powers the unit either ON or OFF. Note: Unit will
automatically power off when idle for 5 minutes. All current settings are automatically
saved prior to powering off.