Tone Ringer

The SL2411 is a bipolar integrated circuit designed for telephone bell replacement.

 • Designed for Telephone Bell Replacement
 • Low Curent Drain
 • Adjustable 2-frequency Tone
 • Adjustable Warbling Rate
 • Extension Tone Ringer Modules
 • Alarms or Other Alerting Devices
 • Adjustable for Reduced Supply Initiation Current.
 • Built-in hysteresis prevents false triggering and rotary dial ‘Chirps’