RDL ST-ACR2 Audio Controlled Relay-Release Delay .5 to 5 Seconds


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Please Note: requires PS-24AS Power Supply (sold separately)

Availability: Usually ships in 5 - 10 Days

This item usually ships within 5-10 days after your order is placed. Your payment will be charged after completing checkout.
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  • The ST-ACR2 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-ACR2 is designed to switch on line 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 -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-ACR2 is from 5 seconds to 50 seconds.
    • Switching Controlled by Audio Signal
    • Sensing of Line-Level Signal
    • Silence Sensing
    • DPDT Switching Contacts
    • Open-Collector SLAVE Output
  • Audio Input:10 k balanced bridging
    Input Connections:May be connected balanced or unbalanced
    Control OutputOpen-collector @ 25 mA suitable to drive indicators or slave LCR relay
    Indicators:Audio threshold LED (for setting sensitivity)
    Retrigger Delay250 ms
    Max. Switching Power:60 W, 125 VA
    Max. Switching Voltage:220 Vdc, 250 Vac
    Max. Switching Current:2 A
    Max. Carrying Current:3 A
    Activation Response Time:25 ms
    Input Sensitivity:-30 dBu to 0 dBu (adjustable)
    Relay Release Delay:5 sec. to 50 sec. nominal (adjustable)
    Power RequirementGROUND-REFERENCED, 24 to 33 Vdc @ 50 mA*
    * Assumes 20 mA max load at SLAVE output
    Ambient Operating Environment:0 degrees C to 55 degrees C
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