Product Description
RDL ST-VOX1 Voice Operated Relay
Overview
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.
Power Supply Not Included
Recommended Power Supply:
- PS-24AS (USA)
- PS-24AX (International)
Features
- Switching Controlled by Voice Signal
- Switching from Mic or Line Level Signals
- Precise Threshold Adjustment
- DPDT Switching Contacts
- Open-Collector SLAVE Output
Specifications
Mic Input: 5 kΩ unbalanced line
Line Input: 200 kΩ 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 -80 dBu to -50 dBu
Line Input Sensitivity: Adjustable -45 dBu to -15 dBu
Indicators: Audio threshold LED (for setting sensitivity)
Retrigger Delay: 50 ms
Release Delay Time Adjustment Range: Relay Contacts: 70 to 260 ms Slave open-collector output: 15 to 260 ms
Activation Response Time Relay Contacts: 5 ms
Slave open-collector output: 3 ms
Ambient Operating Environment: 0° C to 55° C
Power Requirement: GROUND-REFERENCED 24 Vdc @ 50 mA * * Assumes 20 mA max load at SLAVE output
Dimensions: Height: 0.7 in. (1.7 cm), Width: 3 in. (7.6cm), Depth 1.6 in. (3.9 cm)