Key Features
- Switching Controlled by Audio Signal
- Sensing of Line-Level Signal
- Silence Sensing
- DPDT Switching Contacts
- Open-Collector Slave Output
Description
Line-Level Audio Controlled Relay - 5 to 50 s Delay
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.
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 OutputOpen-collector @ 25 mA suitable to drive indicators or slave LCR relay
- Indicators:Audio threshold LED (for setting sensitivity)
- Retrigger Delay250 ms
- Contacts:Double-pole-double-throw
- 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 Vdc @ 50 mA*
- * Assumes 20 mA max load at SLAVE output
- Ambient Operating Environment:0 C to 55 C