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Amazon.com : Taidacent 24V Audio Signal Trigger Relay ...
https://www.amazon.com/Taidacent-Signal-Trigger-Control-Performance/dp/B07TXGD4K2
The relay is always on, the relay will not be disconnected and flashed, and the audio trigger signal After stopping, the timing starts from the new time, and the delay time reaches the relay disconnection; 5, there is a power indicator (red LED) and switch trigger timing indicator (green LED); 6, with timing potentiometer adjustment time, product design is adjustable from 1 to 180 …
Audio Triggered Relay - Project Guidance - Arduino Forum
https://forum.arduino.cc/t/audio-triggered-relay/573399
The 12 volts of dc is to trigger on an ac outlet. That doesn't make complete sense to me. Sounds to me (pardon the pun, being an audio project haha) that you just need a relay module as DrDiettrich said. The Arduino output will trigger the relay; the mains AC live will be broken and attached to the relay's Normally Open (NO) and Common (COM) outputs.
Audio Trigger Relay (Light Indicator)
http://www.pic-control.com/audio-trigger-relay-light-indicator/
Any sound detected will trigger a relay to turn “ON” which you can use to turn on a light indicator or your machinery to automate a process. This device is also an audio triggered switch, converting audio sound into a switch output. Features Sound Input Stereo Audio 3.5mm Jack. Power Input USB type B socket Solid State Relay Output
computers - trigger alarm with relay from PC sound …
https://electronics.stackexchange.com/questions/86466/trigger-alarm-with-relay-from-pc-sound-output
EDIT - simple audio to relay activator: - The audio input (let's say 2Vp-p squarewave) gets level-shifted producing a +1.7Vpk and negative 0.3Vpk relative to 0V on the left-hand schottky diode. The right hand schottky diode and 100nF capacitor rectify this to produce a smooth dc level of about 1.4V.
Amazon.com: RDL ST-ACR1 Line-Level Audio Controlled …
https://www.amazon.com/ST-ACR1-Line-Level-Audio-Controlled-Relay/dp/B004ZKY0FC
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