W91820N SERIES 13-MEMORY TONE/PULSE DIALER WITH HA.
Winbond
W91822N - 13-MEMORY TONE/PULSE DIALER WITH HANDFREE/ LOCK AND HOLD FUNCTIONS
W91820N SERIES 13-MEMORY TONE/PULSE DIALER WITH HANDFREE, LOCK AND HOLD FUNCTIONS GENERAL DESCRIPTION The W91820N is a series of tone/pulse switchable.