RDL ST-ACR1 Line-Level Audio Controlled Relay 0.5 to 5 s

Line-Level Audio Controlled Relay - 0.5 to 5 s Delay

The ST-ACR1 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-ACR1 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-ACR1 is from 0.5 seconds to 5 seconds.

Features:

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

Specifications:

• Audio Input:10 kΩ balanced bridging
• Input Connections:May be connected balanced or unbalanced
• Control Output:Open-collector @ 25 mA suitable to drive indicators or slave LCR relay
• Indicators:Audio threshold LED (for setting sensitivity)
• Retrigger Delay:250 ms
• Contacts:Double-pole-double-throw
• Max. Switching Power:60 W, (220 Vdc,125 Vac, 2A)
• Activation Response Time:25 ms
• Input Sensitivity:-30 dBu to 0 dBu (adjustable)
• Relay Release Delay:0.5 sec. to 5.0 sec. nominal (adjustable)
• Power Requirement:GROUND-REFERENCED, 24 Vdc @ 50 mA*
• * Assumes 20 mA max load at SLAVE output
• Ambient Operating Environment:0 C to 55 C