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RDL ST-ACR1M Microphone Level Audio Controlled Relay, 0.5 to Seconds Delay
ST-ACR1M|RL-STACR1M
RDL ST-ACR1M Microphone Level Audio Controlled Relay, 0.5 to Seconds Delay
ST-ACR1M|RL-STACR1M
Key Features
- Switching Controlled by Audio Signal
- Sensing of Microphone-Level Signal
- Silence Sensing
Key Features
- Switching Controlled by Audio Signal
- Sensing of Microphone-Level Signal
- Silence Sensing
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Become an ADI CustomerKey Features
- Switching Controlled by Audio Signal
- Sensing of Microphone-Level Signal
- Silence Sensing

Radio Design Labs
RDL ST-ACR1M Microphone Level Audio Controlled Relay, 0.5 to Seconds Delay
ST-ACR1M | RL-STACR1M
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Overview
Specifications
Documents
Product Overview
Each 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.Two 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.
Main Features
- Switching Controlled by Audio Signal
- Sensing of Microphone-Level Signal
- Silence Sensing
- DPDT Switching Contacts
- Open-Collector SLAVE Output
General Information
Name: RDL ST-ACR1M Microphone Level Audio Controlled Relay, 0.5 to Seconds Delay
Category: Radio Design Labs, Batteries & Power Supplies, Circuit Breakers, Fuses & Relays, Relays
UPC Code: 813721011169
Country of Origin: United States. Country of origin is subject to change.
Specifications
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ADI Part Number RL-STACR1M Brand Name Radio Design Labs Manufacturer Radio Design Labs, Inc Manufacturer Part Number ST-ACR1M Product Model ST-ACR1M Product Name Microphone Level Audio Controlled Relay - 0.5 to 5 s delay Product Type Audio Controlled Relay Sector Professional AV
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Depth 1.6"|3.9 cm Height 0.7"|1.7 cm Package Type Box Width 3"|7.6 cm
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Country of Origin US Features DPDT Switching Contacts, Open-Collector SLAVE Output, Sensing of Microphone-Level Signal, Silence Sensing, Switching Controlled by Audio Signal