ST-ACR1M

RDL ST-ACR1M - Microphone-Level Audio Controlled Relay with Adjustable Delay

The RDL ST-ACR1M is a compact audio-controlled relay from the STICK-ON® series, designed to switch devices based on the presence of microphone-level audio signals. It is ideal for AV installations requiring automatic switching triggered by low-level audio input.

The module detects signals between -65 dBu and -20 dBu and activates a DPDT relay and an open-collector SLAVE output. Two multi-turn trimmers allow precise adjustment of input sensitivity and release delay time, ranging from 0.5 to 5 seconds. A threshold LED assists in accurate sensitivity calibration.

ST-ACR1M is suitable for automation in sound reinforcement, conferencing, and control systems, offering reliable performance and easy installation.

Functionality

• Automatic switching based on microphone-level audio
• Adjustable input sensitivity
• Adjustable release delay time
• Silence detection
• Open-collector SLAVE output
• DPDT switching contacts

Features

• Device type: audio-controlled relay
• Input signal range: -65 dBu to -20 dBu (microphone level)
• Sensitivity adjustment: SENS trimmer with threshold LED
• Delay adjustment: 0.5-5 s (DELAY trimmer)
• Outputs: DPDT relay, open-collector SLAVE
• Mounting: STICK-ON® series - quick and convenient
• Applications: AV automation, signal detection, control

The RDL ST-ACR1M is a dependable solution for automatic device control triggered by microphone-level audio, offering flexible configuration and simple integration.