RDL ST-ACR1M Microphone Level Audio Controlled Relay 0.5 to 5 seconds Delay

RDL ST-ACR1M Microphone Level Audio Controlled Relay 0.5 to 5 seconds Delay

  • $129.61
    Unit price per 


Radio Design Labs ST-ACR1M Microphone Level Audio Controlled Relay - 0.5 to 5 s Delay

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.

RDL ST-ACR1M Features:
  • Switching Controlled by Audio Signal
  • Sensing of Microphone-Level Signal
  • Silence Sensing
  • DPDT Switching Contacts
  • Open-Collector SLAVE Output

Required Power Supply RDL PS24V Sold Separately


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