Velleman MK103RS – Sound-To-Light DIY kit

Velleman MK103RS – Sound-To-Light DIY kit

Velleman Electronic circuit
Four high-intensity LEDs light up and react simultaneously to every sound
The unit can also be used to indicate when the doorbell or the telephone is ringing, which is particularly interesting for the hearing-impared.
Adjustable sensitivity with potentiometer
Built-in microphone
Power supply : 9 V Battery (Not incl.)