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Relay Box is a small box (150 mm x 85 mm x 20 mm) containing 4 relays each one driven by photocoupler.
Whenever multiple equipment (such as satellite receivers driving hard disk recorders, mixing consoles driving OnAir warning lamps, etc) need to be electrically decoupled, or wherever TTL commands need to be transformed into clean contact closures and in many other applications, Relay Box is a simple and versatile solution.
Relay Box also features easy access to I/O connectors, 6 leds on the top surface, and 2 FlipFlop stages (with Set/Clear commands each) driving two relays in addition to direct control of relays from photocouplers. Standard + 5Vdc voltage is required (power is generally coming from GPI/O cards in the computers).
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