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Radio Design Labs ST-VOX1
Voice-Activated Relay

OUR PART #  STVOX-1

Our Price: $106.51
List Price: $142.48
You save 25%! (Low Price Guarantee)
Usually ships in 7-14 business days.
Need it sooner? Call us!

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Radio Design Labs' ST-VOX1 is an Audio Controlled Relay in the group of STICK-ON series products by Radio Design Labs. These products are designed for quick, convenient installation, and reliable operation in a variety of control applications. The ST-VOX1 is specifically designed to switch reliably on voice signals.

When used in intercom or talk back 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 RDL's 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.

The ST-VOX1 releases very quickly, but holds on through very short pauses in syllables common to speech. These time constants allow the design of a communications system yielding comfortable two-way conversation.

NOTE: Radio Design Labs' PS-24AS power supply is NOT included but is required in order to power this product.  Please see the "Accessories" tab or click here for more information on the PS-24AS power supply.

Features:

  • High-impedance inputs connect across any unbalancedaudio line
  • Multiturn sensitivity adjustment permits precisethreshold setting
  • Multiturn DELAY control adjusts relay release delay
  • Tight passband filtering yields triggering on voicefrequencies
  • SLAVE open-collectorterminal allows additional relays to be added for more contacts (RDL'sST-LCR1)
  • SLAVE terminal may be used with remote switch to manually overridethe control circuit and turn on the relay

Specifications:

  • Mic Input: 5 kohm unbalanced line
  • Line Input: 200 kohm unbalanced
  • Control Outputs: Open-collector @ 100 mA, suitable to drive indicators or slave LCR
  • Relay Contacts: Double-Pole-Double-Throw
  • Maximum switching power: 60 W, 125 VA
  • Maximum switching voltage: 220 Vdc, 250 Vac
  • Maximum switching current: 2 A
  • Maximum carrying current: 3 A
  • Mic Input Sensitivity: Adjustable -75 dBu to -25 dBu
  • Line Input Sensitivity: Adjustable -45 dBu to -15 dBu
  • Indicators: Audio threshold LED (for setting sensitivity level)
  • Retrigger Delay: approximately 50 ms
  • Release Delay Time Adjustment Range:
        * Relay Contacts: 70 to 260 milliseconds
        * SLAVE (open-collector output): 15 to 260 milliseconds
  • Activation Response Time:
        * Relay Contacts: 5 milliseconds
        * SLAVE (open-collect. output): 3 milliseconds
  • Power Requirement: 24 to 33 Vdc @ 50 mA, Ground-referenced
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Radio Design Labs STR-19A Rackmount System for 12 Stick-On Units
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24 VDC 500mA Switching Power Supply
Radio Design Labs PS-24AS 24 VDC 500mA Switching Power Supply
Radio Design Labs' PS-24AS is a 24 VDC switching power supply with a North American AC plug, 500 mA, DC plug. Compatible with RDL's RU-SM16D (sold separately).Radio Design Labs PS-24AS Specifications: Input: 100 to 240 VAC ...
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Radio Design Labs' SR-12A chassis can be mounted in a rack or on a backboard to provide mounting of 12 STICK-ONs.
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Usually ships in 7-14 business days.
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Mounting Bracket for up to 4 STICK-ON Modules
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6 Stick-On DIN Rail Adapter Modules
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Usually ships in 7-14 business days.
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Usually ships in 7-14 business days.
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Detachable Terminal Block
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Usually ships in 7-14 business days.
Need it sooner? Call us!

Click to download

Radio Design Labs ST-VOX1
Voice-Activated Relay

OUR PART #  STVOX-1

Product Information:

Radio Design Labs' ST-VOX1 is an Audio Controlled Relay in the group of STICK-ON series products by Radio Design Labs. These products are designed for quick, convenient installation, and reliable operation in a variety of control applications. The ST-VOX1 is specifically designed to switch reliably on voice signals.

When used in intercom or talk back 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 RDL's 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.

The ST-VOX1 releases very quickly, but holds on through very short pauses in syllables common to speech. These time constants allow the design of a communications system yielding comfortable two-way conversation.

NOTE: Radio Design Labs' PS-24AS power supply is NOT included but is required in order to power this product.  Please see the "Accessories" tab or click here for more information on the PS-24AS power supply.

Features:

  • High-impedance inputs connect across any unbalancedaudio line
  • Multiturn sensitivity adjustment permits precisethreshold setting
  • Multiturn DELAY control adjusts relay release delay
  • Tight passband filtering yields triggering on voicefrequencies
  • SLAVE open-collectorterminal allows additional relays to be added for more contacts (RDL'sST-LCR1)
  • SLAVE terminal may be used with remote switch to manually overridethe control circuit and turn on the relay

Specifications:

  • Mic Input: 5 kohm unbalanced line
  • Line Input: 200 kohm unbalanced
  • Control Outputs: Open-collector @ 100 mA, suitable to drive indicators or slave LCR
  • Relay Contacts: Double-Pole-Double-Throw
  • Maximum switching power: 60 W, 125 VA
  • Maximum switching voltage: 220 Vdc, 250 Vac
  • Maximum switching current: 2 A
  • Maximum carrying current: 3 A
  • Mic Input Sensitivity: Adjustable -75 dBu to -25 dBu
  • Line Input Sensitivity: Adjustable -45 dBu to -15 dBu
  • Indicators: Audio threshold LED (for setting sensitivity level)
  • Retrigger Delay: approximately 50 ms
  • Release Delay Time Adjustment Range:
        * Relay Contacts: 70 to 260 milliseconds
        * SLAVE (open-collector output): 15 to 260 milliseconds
  • Activation Response Time:
        * Relay Contacts: 5 milliseconds
        * SLAVE (open-collect. output): 3 milliseconds
  • Power Requirement: 24 to 33 Vdc @ 50 mA, Ground-referenced
Rackmount System for 12 Stick-On Units
Radio Design Labs STR-19A Rackmount System for 12 Stick-On Units
Radio Design Labs' STR-19A Racking System holds up to 12 STICK-ONs in a 19" rack and only occupies two rack spaces.
136.70 182.87 25
In Stock
Free Shipping Available
Stick-On Mounting Rack for 10 Units
Radio Design Labs SR-10 Stick-On Mounting Rack for 10 Units
Radio Design Labs' STR-10 Racking System holds up to 10 STICK-ON units.  It holds STICK-ONs at an angle allowing for control adjustment from either the edge of a STICK-ON, or the top (depending on where the adjustment is located on ...
65.41 87.48 25
In Stock
Free Shipping Available
24 VDC 500mA Switching Power Supply
Radio Design Labs PS-24AS 24 VDC 500mA Switching Power Supply
Radio Design Labs' PS-24AS is a 24 VDC switching power supply with a North American AC plug, 500 mA, DC plug. Compatible with RDL's RU-SM16D (sold separately).Radio Design Labs PS-24AS Specifications: Input: 100 to 240 VAC ...
23.40 31.28 25
In Stock
Din Rail Adaptor for STICK-ON
Radio Design Labs DRA-35S Din Rail Adaptor for STICK-ON
The DRA-35S is a 35 mm DIN rail mounting bracket that provides positive mounting for any RDL STICK-ON® module. The oblique mounting angle of the DRA-35S allows an installer to mount several STICK-ON modules to a single DIN rail. Access to ...
19.40 22.89 15
In Stock
Mounting Kit for STICK-ON, TX, or Rack-Up module
Radio Design Labs MB1-RDL Mounting Kit for STICK-ON, TX, or Rack-Up module
Two mounting brackets mounts a STICK-ON, TX, or Rack-Up module to a flat surface.
3.46 4.08 15
In Stock
Rackmount Kit for 10 Stick-On Units
Radio Design Labs STR-19B Rackmount Kit for 10 Stick-On Units
Radio Design Labs' STR-19B Racking System holds up to 10 STICK-ON unitss in a 19 inch rack and only occupies two rack spaces. The STR-19B holds STICK-ONs at an angle allowing for control adjustment from either the edge of a STICK-ON, or ...
162.53 217.40 25
Usually ships in 7-14 business days.
Need it sooner? Call us!
Free Shipping Available
Mounting Frame for Stick/TX
Radio Design Labs SR-4 Mounting Frame for Stick/TX
Radio Design Labs' SR-4 is a universal module chassis that can mount to a backboard, wall or nearly any other support. It provides mounting for 4 STICK-ON power amplifiers or 7 standard STICK-ON modules. TX ™ modules may also be mounted. ...
84.88 113.53 25
Usually ships in 7-14 business days.
Need it sooner? Call us!
STICK-ON Series 19"W Mounting Rack for up to12 Modules
Radio Design Labs SR-12A STICK-ON Series 19"W Mounting Rack for up to12 Modules
Radio Design Labs' SR-12A chassis can be mounted in a rack or on a backboard to provide mounting of 12 STICK-ONs.
65.41 87.48 25
Usually ships in 7-14 business days.
Need it sooner? Call us!
Mounting Bracket for up to 4 STICK-ON Modules
Radio Design Labs ST-PBR4 Mounting Bracket for up to 4 STICK-ON Modules
Radio Design Labs' ST-PBR4 is a mounting frame with slots for four STICK-ON modules.  The ST-PBR4 mounts on an FP-PSB1A power supply bracket or to any flat surface.  The ST-PBR4 design allows the installer to secure the modules ...
34.59 46.27 25
Usually ships in 7-14 business days.
Need it sooner? Call us!
6 Stick-On DIN Rail Adapter Modules
Radio Design Labs DRA-35S-6 6 Stick-On DIN Rail Adapter Modules
Radio Design Labs' DRA-35S-6 is a 35 mm DIN rail mounting bracket that provides positive mounting for any RDL STICK-ON® module.  The oblique mounting angle of the DRA-35S allows an installer to mount several STICK-ON modules to a ...
32.87 38.78 15
Usually ships in 7-14 business days.
Need it sooner? Call us!
Mounting Strip for STICK-ON Units
Radio Design Labs Smk 12 Mounting Strip for STICK-ON Units
The SMK-12 allows removable surface (up to 6 units) or edge (typically 12, max. 16) mounting of STICK-ON units. They can be fastened to its surface using screws or adhesive foam pads.
28.01 37.45 25
Usually ships in 7-14 business days.
Need it sooner? Call us!
Mounting Bracket for STICK-ON Modules
Radio Design Labs ST-RRB1 Mounting Bracket for STICK-ON Modules
Radio Design Labs' ST-RRB1 mounting kit contains a bracket to attach a STICK-ON module to a rear rack rail or to any flat surface. The module slides into the holder and snaps into position. The module may easily be removed.
22.67 26.74 15
Usually ships in 7-14 business days.
Need it sooner? Call us!
Detachable Terminal Block
Radio Design Labs Dtb Rdl Detachable Terminal Block
Use DTB's to quickly detach and reattach wiring harness to STICK-ON units.
6.92 8.16 15
Usually ships in 7-14 business days.
Need it sooner? Call us!

Click to download

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