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RDL STA-CR1 Audio Controlled Relay


The ST‑ACR1 is an audio controlled relay designed for quick, convenient installation, and reliable operation in a variety of control applications.
List Price: $128.15
Sale Price: $118.57

The ST‑ACR1 is designed to switch on line level sources. Two multi-turn 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 ‑30 dBu and 0 dBu. The DELAY control sets the time required for the relay to release when the audio drops below the threshold.

The delay adjustment range for the ST‑ACR1 is from 0.5 seconds to 5 seconds.

RDL STA-CR1 Features:

  • Switching Controlled by Audio Signal
  • Sensing of Line‑Level Signal
  • Silence Sensing
  • DPDT Switching Contacts
  • Open‑Collector SLAVE Output
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