Radio Design Labs ST-VOX1

Voice Operated Relay

The ST-VOX1 is an Audio Controlled Relay in the STICK-ON? series. When used in intercom or talkback applications the ST-VOX1 may be triggered directly from an unbalanced microphone. In many such installations the microphone or other audio source must be preamplified making the ST-VOX1 an ideal mate to work with the STM-1 preamp. The unbalanced output from the STM-1 can be used to trigger the ST-VOX1 while the STM-1 balanced output is used for the audio feed.

Features:
• Switching Controlled by Voice Signal
• Switching from Mic or Line Level Signals
• Precise Threshold Adjustment
• DPDT Switching Contacts
• Open-Collector SLAVE Output