Product Description
RDL ST-ACR1M Microphone Level Audio Controlled Relay - 0.5 to 5 s delay
Overview
Each of the ST-ACR products 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-ACR-1M is designed to switch on low-level sources, such as microphones or mic-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 -65 dBu and -20 dBu. The DELAY control sets the time required for the relay to release when the audio drops below the threshold. The adjustment range 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 Microphone-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: -60 dBu to -20 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)