Product Description
RDL ST-ACR1 Line-Level Audio Controlled Relay - 0.5 to 5 s
Overview
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.
Power Supply Not Included
Recommended Power Supply:
- PS-24AS (USA)
- PS-24AX (International)
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, 125 VA
Max. Switching Voltage: 220 Vdc, 250 Vac
Max. Switching Current: 2 A
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)
Ambient Operating Environment: 0° C to 55° C
Power Requirement: GROUND-REFERENCED, 24 Vdc @ 50 mA* * Assumes 20 mA max load at SLAVE output
Dimensions: Height: 0.7 in. (1.7 cm), Width: 3 in. (7.6 cm), Depth: 1.6 in. (3.9 cm)