! ! ! ! ! ! Low current drain Adjustable 2 tone frequency Hysteresis circuit prevents false triggering and rotary dial “CHIRPS” 8 pin DIP plastic package External trigger.

! ! ! Telephone bell replacement Extension tone ringer modules Alarms or other alerting devices PIN ASSIGNMENT PIN 1 2 .

TELEPHONE TONE RINGERS THE KA2410/2411 IS A BIPOLAR INTEGRATED CIRCUIT DESIGNED FOR TELEPHONE TONE RINGER.THESE DEVICES CONSISTS OF AN OUTPUT AMPLIFIER, TWO OSCILLATORS, AND POWER SUPPLY CONTROL CIRCUIT. FEATURES ! ! ! ! ! ! Low current drain Adju.

KA2410

KA2418B

KA2401

KA2402

KA2402D

KA2404

KA2404A

KA2407

KA2425A

KA2428

KA248

KA2002-BE10A

KA2002-BE13A