Relay module for Clap switch- Operate 100-240V AC Appliances


9 in stock

This relay module can be connected to the basic clap switch DIY kit and you can operate a 110V-220V lamp easily.

Frequently bought together

Easy Clap switch- DIY kit

It's a simple clap switch DIY kit for electronics beginners, hobbyists, and students. The circuit turns on an LED on your first clap and turns it off on your second clap. There is a possibility of connecting a relay module to this circuit so that you can turn on a 110V-220V AC lights with your claps easily.

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This product is shipped from Sydney, Australia. Worldwide shipping available- we ship to USA, Canada, New Zealand, UK, EU and Non-EU countries.

Description: This is a dependent DIY kit module that has to be used with a clap switch available at This kit DOES NOT work independently as a clap switch. It is useless without this clap switch kit. So, you need to order that kit also.

It comes as a pack of parts kit and is easily assembled if you can follow the silkscreen indicators (labels) and have beginning experience with a soldering iron. You will need to read the resistor bands or use a multimeter to determine the resistor sizes. The kit operates with a 9V battery.


  • A DIY kit module that works with this clap switch kit. It is useless without the clap switch.
  • Operates a 100-240V lamp with clap/loud sound.
  • Supply voltage: 6V-9V. The same power supply can be used for this clap switch kit.
  • There are two supply input points: a DC barrel and a screw terminal. You can use one of the points to power up the kit.
  • Dimension: 48.26mm x 49.53mm.
  • Relay specification: Activation voltage: 5V DC. Controls appliances operating at 10A 250VAC, 10A 125VAC, 10A 30VDC, 10A 28VDC. Suitable for Europe, North America, Australia and New Zealand.

The kit package contains the following components:

  1. 1 x Bare PCB with Silkscreen indicators
  2. 2 x 1K carbon film resistor
  3. 1 x 4.7K carbon film resistor
  4. 1 x 1N4001 diode
  5. 1 x LM7805
  6. 1 x BD139
  7. 1 x 0.1uF (code- 104)
  8. 2 x 10uF capacitor
  9. 1 x PC817 optocoupler
  10. 1 x SPDT switch
  11. 1 x 5V relay
  12. 1 x 3 pin screw terminal
  13. 1 x 2 pin screw terminal
  14. 1 x DC barrel
  15. 1 x 5mm LED
  16. 1 x 9V battery connector

NOTE: We are selling a slightly different PCB, this will make your job easier. This is better than the previous one. Available in BLUE color. See the image below to know how you can connect the relay module to the clap switch


Order the clap switch kit also. The relay module is useless is without the clap switch.

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