INTRODUCTION
The KA2410/KA2411 is a bipolar integrated circuit designed for telephone bell replacement.

FUNCTIONS
● Two oscillators
● Output amplifier
● Power supply control circuit

FEATURES
● Designed for telephone bell replacement
● Low current drain.
● Small size ‘MINIDIP’ package.
● Adjustable 2-frequency tone.
● Adjustable warbling rate.
● Built-In hysteresis prevents false triggering and rotary dial
   “CHIRPS”.
● Extension tone ringer modules.
● Alarms or other alerting devices.
● External triggering or ringer disable. (KA2410)
● Adjustable for reduced initial supply current. (KA2411)