RDL ST-ACR1M Microphone Level Audio Controlled Relay 0.5 to 5 s Delay

Microphone Level Audio Controlled Relay - 0.5 to 5 s Delay 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.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 unbal