* Separate 3 trigger keys (TG1, TG2, TG3) with 3 different telephone ring tones output.
* Built in 1 LED flash circuit for sound output indication.
* Built in oscillator resistor and fixed sound quality.
* Trigger mode by one shot non re-trigger type.
* Application: Telephone systems, hand phones, security systems, door phones.
* Package Type: DIP-8L