® LS1240A ELECTRONIC TWO - TONE RINGER . . . . .
LS1240A - ELECTRONIC TONE RINGER
LS1240A - Electronic Two-Tone Ringer
DM74ALS1240A - Octal 3-STATE Bus Driver
LS1240AD1 - Electronic Two-Tone Ringer
LS1240A - ELECTRONIC TWO - TONE RINGER
LS1240AD1 - ELECTRONIC TWO - TONE RINGER
LS1240ACP - Single-Chip Electronic Ringer
