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.
Switching Controlled by Voice Signal
Switching from Mic or Line Level Signals
Precise Threshold Adjustment
DPDT Switching Contacts
Open-Collector SLAVE Output
Operating Temperature (Maximum):
131 F
Operating Temperature (Minimum):
32 F
Mic Input:
5 K ohm unbalanced line
Line input:
200 K ohm unbalanced
Control Outputs:
Open-Collector @ 25 mA suitable to drive indicators or Slave LCR
Relay Contacts:
Double-pole-double-throw
Max. Switching Power:
60 W (220 Vdc, 125 Vac, 2A)
Mic Input Sensitivity:
Adjustable -75 to -25 dBu
Line Input Sensitivity:
Adjustable -45 to -15 dBu
Indicators:
Audio threshold LED (for setting sensitivity)
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