5 V Audio Signal Relay Controller with Case

Use an audio signal to trigger a relay with this enclosed 5 V DC controller, which releases the relay after the signal has been absent for more than six seconds.

Control a relay from an audio signal

• ✅ Switch in response to audio – The controller starts the relay when it detects an audio signal.
• ✅ Avoid an immediate release during short pauses – The relay disconnects after more than six seconds without audio.
• ✅ Keep the board enclosed – The supplied case provides a housing for the controller.

• Power supply: 5 V DC. Relay contact rating listed: up to 220 V AC, 10 A, or 30 V DC, 10 A.

The photographs show audio and power leads. Check the connections and intended load before integration; installation involving mains circuits requires appropriate electrical expertise.

Check your signal, supply and load requirements before choosing this controller. Explore more electronic components.