Crest Electronics CRE57005S BASE STATION/SUPER RECEIVER - Manual (Page 6)

SOUND CONTROL
On The Transmitter Auxiliary Functions
Press – 1 for ► Turn ON / Turn OFF Sound
Press – 1 for ► Bell
Press – 1 for ► Horn
Press – 1 for ► High Volume
Press – 1 for ► Medium Volume
Press – 1 for ► Low Volume