{"product_id":"radio-design-labs-st-acr1m-microphone-level-audio-controlled-relay-0-5-to-5-s-delay","title":"RDL ST-ACR1M Microphone Level Audio Controlled Relay 0.5 to 5 s Delay","description":"\u003cp\u003eMicrophone Level Audio Controlled Relay - 0.5 to 5 s Delay\u003c\/p\u003e\n\u003cp\u003eEach of the ST-ACR products 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-ACR-1M is designed to switch on low-level sources, such as microphones or mic-level sources.\u003c\/p\u003e\n\u003cp\u003eTwo multiturn trimmers are provided. The SENS potentiometer adjusts the audio input sensitivity. A threshold LED facilitates accurate adjustment. The module can be set to trigger on signals between -65 dBu and -20 dBu. The DELAY control sets the time required for the relay to release when the audio drops below the threshold. The adjustment range is from 0.5 seconds to 5 seconds.\u003c\/p\u003e\n\u003ch2\u003eFeatures:\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSwitching Controlled by Audio Signal\u003c\/li\u003e\n\u003cli\u003eSensing of Microphone-Level Signal\u003c\/li\u003e\n\u003cli\u003eSilence Sensing\u003c\/li\u003e\n\u003cli\u003eDPDT Switching Contacts\u003c\/li\u003e\n\u003cli\u003eOpen-Collector SLAVE Output\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications:\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAudio Input:10 kΩ balanced bridging\u003c\/li\u003e\n\u003cli\u003eInput Connections:May be connected balanced or unbalanced\u003c\/li\u003e\n\u003cli\u003eControl Output:Open-collector @ 25 mA suitable to drive indicators or slave LCR relay\u003c\/li\u003e\n\u003cli\u003eIndicators:Audio threshold LED (for setting sensitivity)\u003c\/li\u003e\n\u003cli\u003eRetrigger delay:250 ms\u003c\/li\u003e\n\u003cli\u003eContacts:Double-pole-double-throw\u003c\/li\u003e\n\u003cli\u003eMax. Switching Power:60 W, (220 Vdc, 125 Vac, 2A0\u003c\/li\u003e\n\u003cli\u003eActivation response time:25 ms\u003c\/li\u003e\n\u003cli\u003eInput Sensitivity:-60 dBu to -20 dBu (adjustable)\u003c\/li\u003e\n\u003cli\u003eRelay Release Delay:0.5 sec. to 5.0 sec. nominal (adjustable)\u003c\/li\u003e\n\u003cli\u003ePower Requirement:GROUND-REFERENCED, 24 Vdc @ 50 mA*\u003c\/li\u003e\n\u003cli\u003e* Assumes 20 mA max load at SLAVE\u003c\/li\u003e\n\u003cli\u003eoutput\u003c\/li\u003e\n\u003cli\u003eAmbient Operating Environment:0 C to 55 C\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"RDL","offers":[{"title":"Default Title","offer_id":42494495391922,"sku":"RDL STACR1M","price":212.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0614\/8122\/2322\/products\/ST-ACR1M.jpg?v=1754404950","url":"https:\/\/www.performanceaudio.com\/en-ca\/products\/radio-design-labs-st-acr1m-microphone-level-audio-controlled-relay-0-5-to-5-s-delay","provider":"Performance Audio","version":"1.0","type":"link"}