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Relay Switching Device


The STUDIOSLAVE Auxiliary Relay Pack is a microprocessor based switching and control interface for broadcast studio and control rooms where multiple and various isolated outputs are required to operate from one or more control inputs. Input and output connectors are Eurostyle pluggable types, and some outputs have user selectable provisions for release delay times from instantaneous to one second. It sports LED indicators as well as a "test" button for local activation.

The DM Engineering MICPRO can be used to control the STUDIOSLAVE for a lighted On/Off mic controller on your production audio mixer, just like more expensive broadcast consoles. Wall or hallway warning 115VAC lights can also be controlled with the optional RELAYPACK.



• Relay outputs, 8 form C (SPDT) bifurcated gold clad silver isolated contacts for switching functions ranging from low level audio up to 2 amps, AC or DC. Circuits 1-4 follow input commands while the release time of circuits 5-8 may be delayed up to 1 second if desired.
• Solid State Relay (SSR) driver voltages (5VDC), current limited simultaneous constant and flashing driving signals for remote control of the DM Engineering Solid State RELAYPACK for 115VAC "ON AIR" or "RECORDING" signs or any other appropriate application.
• Tally output, an optically isolated floating NPN transistor output for controlling another tandem STUDIOSLAVE unit or any other appropriate application.
• 9VDC, regulated supply voltage up to 350 ma. for utility use such as lamp or LED illumination.

Control Inputs (can be used simultaneously):
• Latch On, a momentary contact closure between the Latch On terminal and the Common terminal will activate the unit.
• Latch Off, a momentary contact closure between the Latch Off terminal and the Common terminal will deactivate the unit.
• Continuous, a closure between the Continuous terminal and the Common terminal will activate the unit. Removal of the contact closure will deactivate the unit.
• 5-30VDC Continuous operates the same as the Continuous function but allows for the application of 5-30 Volts DC between the input and common terminals to activate the unit. Removal of the voltage will deactivate the unit.

Release Select:
• User configurable release times for output circuits 5-8 and SSR relay driver voltages, except output circuits 1-4 and Tally which follows the input commands. The Release select may be restricted to the SSR driver voltages only if desired. Available selection times are; Normal (approx. 2ms), 250ms, 500ms, or 1 sec.

• Power: 9VDC, using supplied power supply
• Size: 6 X 7 X 1.25 inches (including attached connectors)
• Shipping Weight: Approximately 2 lbs.

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