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Amazon.com: RDL ST-ACR1 Line-Level Audio Controlled …
https://www.amazon.com/ST-ACR1-Line-Level-Audio-Controlled-Relay/dp/B004ZKY0FC
Taidacent 24V Audio Signal Trigger Relay Module Sound Sensor Sound Delay Input Audio Signal Relay Control Switch Performance Stable 1 offer from $35.35 HiLetgo 12V 1 Channel Relay Module With Optocoupler Isolation Support High or Low Level Trigger
Audio Controlled Relay – Model G623AUDIO | Lencore
https://www.lencore.com/documentation/data-sheets/audio-controlled-relay-g623audio/
The Audio Controlled Relay is designed for quick convenient installation, and reliable operation in a variety of control applications. The G623AUDIO is designed to switch on line level sources and its relatively short release delay time makes it the optimum choice for voice applications.
Audio Activated Relay Switch Output [PIC-125]
https://www.pic-control.com/audio-activated-relay-switch-output-pic-125/
Use with PIC-124 Mute Switch to control sound/alarm. Features. Power through USB mini-B port (5V). Socket for a 3.5mm stereo audio jack. 3.81mm pluggable connector terminal for the relay output with NO (Normally-Open), NC (Normally-Close). Relay output rated at: 2A (up to 30Vdc) or 1A (125Vac). Set the relay output duration through adjustment POT inside the device.
RDL ST-ACR1 - Line-Level Audio Controlled Relay ST …
https://www.bhphotovideo.com/c/product/290033-REG/RDL_ST_ACR1_ST_ACR1_Line_Level_Audio.html
The RDL ST-ACR1 is an audio controlled relay and part of RDL's "Stick-On" series of equipment. It is designed for reliable operation and quick, easy installation. The ST-ACR1 is designed to switch line-level signals. Two multi-turn trimmers are provided, …
RDL ST-ACR1 Line-Level Audio Controlled Relay - 0.5 to 5 s
https://www.markertek.com/product/st-acr1/rdl-st-acr1-line-level-audio-controlled-relay-0-5-to-5-s
The ST-ACR1 is an Audio Controlled Relay in the STICK-ON series. These products are designed for quick, convenient installation, and reliable operation in a variety of control applications. The ST-ACR1 is designed to switch on line level sources. Two multiturn trimmers are provided. The SENS potentiometer adjusts the audio input sensitivity.
Relays for Switching Audio Signals
http://www.geofex.com/Article_Folders/relays/relays_for_switching_audio_signa.htm
Relays are some of the oldest switching parts available, butthey are misunderstood by many audio hackers. Here's a run down on the basicsand how to apply them. Relays are electro-magnetically activated switches. Literally,there is an electromagnet inside the relay, and energizing that electromagnetcauses the switch to change position by pulling the movable …
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