30 years – 30 products
At the end of our anniversary, we are now offering another discount on your 30 favorite products!

14 EUR instead of 15,90 EUR
Offer valid until 31/01/2020 (or while stocks last)


Clap switch/Sound-activated switch designed around op-amp, flip-flop and popular 555 IC. Switch avoids false triggering by using 2-clap sound. Clapping sound is received by a microphone, the microphone changes the soundwave to electrical wave, which is further amplified by op-amp. 555 timer IC acts as monostable multivibrator then flip-flop changes the state of output relay on every two-clap sound. This can be used to turn ON/OFF lights and fans. Circuit activates upon two-clap sound and stays activated until another sound triggers the circuit.
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Item number: RK-10155
Availability: immediately
Gross: 14.00 EUR
Net: 11.38 EUR

plus shipping costs

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