Settings; Ringer Settings; Flash (Recall) Setting - ClearSounds Geemarc PhotoPHONE 100 Manual

SETTINGS

Ringer Settings

A switch located on the rear of the PHOTOPHONE 100 unit
allows the ringer volume to be switched to HI (maximum
volume), LO (lowest volume) or OFF (if you would prefer not to be
disturbed).

Flash (Recall) Setting

You can adjust the flash time by using the switch
located on the right side of your telephone phone. There are three
levels available, 100ms, 270ms and 650 ms. Your telephone
works with a flash time for United Kingdom (R=100ms).
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