Anywhere you need...

• Control Switching from Audio Signal
• Switching from Mic OR Line Signals
• Silence Sensing
• Precise Threshold Adjustment
• DPDT Switching Contacts
• Open-Collector SLAVE Output

The ST-ACR1 module is designed to switch on LINE-LEVEL sources. Its relatively short release delay time makes it the optimum choice for voice applications.

• High-impedance bridging input connects across any audio line
• Input may be connected to either balanced or unbalanced sources
• Multiturn sensitivity adjustment permits precise threshold setting
• Multiturn DELAY control adjusts relay release delay
• Bandpass filtering yields triggering on characteristic audio spectrum
• SLAVE open-collector terminal allows additional relays to be added for more contacts (Radio Design Labs' ST-LCR1 or ST-LCR2)
• SLAVE terminal may be used with remote switch to manually override the control circuit and turn on the relay

NOTE: Power Supply Required