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Catalog : Arduino, Pi, Microcontrollers, 3D Printing and Kits : Experimenter Kits

Voice Activated Switch (VOX) Kit

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Voice Activated Switch (VOX) Kit

SKU: CK257

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The design of this circuit is based around an Integrated Circuit that ensures very high sensitivity. Any sound will be captured by the microphone and will activate the output relay which will remain activated while there is sound. The relay can handle loads of up to 3A. It has many applications such as controlling a tape recorder in seminars and classrooms (the recorder will start recording only when the speaker starts speaking).


  • Supply voltage: 12V DC / 100mA
  • Output relay: 3A / 110V AC
  • Adjustable input sensitivity
  • Includes sensitive microphone
  • ON mode LED indicator
  • Dimensions: 2.25" x 2.34"
US$ 19.63 price
US$ 18.65 5 - 9 (5% Off)
US$ 17.67 10 + (10% Off)

Accessories & Related Items
SH-980 Helping Hands US$ 13.44 Optional
SR-1020 Soldering Iron - 30 Watt US$ 11.31 Optional
SR-340 Rosin Core Solder, 60/40 - 1.0mm, 17g Tube US$ 4.26 Optional
Order included items ONLY if you require additional quantity.