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The RDL ST-ACR2 is an audio controlled relay and part of RDL's "Stick-On" series of equipment. It is designed for reliable operation and quick, easy installation. The ST-ACR2 is designed to switch line-level signals. Two multi-turn trimmers are provided, one for audio input sensitivity, and one for delay control.
The unit can be triggered from signals between -30 to 0 dBu, and an indicator LED allows accurate adjustments of the input sensitivity. The delay control sets the time delay for relay release when the audio drops below the pre-set threshold. The delay can be set from 5 to 50 seconds.
Small, compact unit can be easily mounted almost anywhere
Switching from line signals
Accepts balanced or unbalanced signals
DPDT switching contacts
Open-collector slave output
RDL ST-ACR2 Specs
10 k ohms Balanced Bridging
Balanced or Unbalanced
Open-Collector @ 50mA Suitable to Drive Indicators or Slave LCR Relay
Audio Threshold LED for Setting Sensitivity
60W, 125 VAC (Max)
220 VDC, 250 VAC (Max)
2 A (Max)
3 A (Max)
Activation Response Time
-30 dBu to 0 dBu (Adjustable, Provides Switching at a -20dB Threshold for Signals of -10 dBu to +20 dBu)