Lutron Electronics PCD-431 - Front Panel Description; Battery Compartment;Cover; Display; Power Button

3. FRONT PANEL DESCRIPTION
3-1 Battery compartment/Cover
3-2 Display
3-3 Power Button
3-4 Hold Button, Unit Button
3-5 REC Button ( / Button )℃℉
3-6 Conductivity Electrode
3-7 Protection Cover
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