The MIDI Solutions R8 8-output MIDI-controlled Relay Array contains eight relays which can be programmed to open or close in response to MIDI events.
Event types are programmable and include:
Fast reed relays are used for a response time of less than 2 ms. Relay contacts are rated at 500 mA. Contacts are made available via connections at the tip and sleeve of 1/4" mono phone jacks. When switching inductive loads be aware of precautions that must be taken to avoid back EMF problems.
The R8 is programmed by sending it MIDI System Exclusive messages (read the Programming FAQs for more details). This is easily done with the MIDI Solutions Programming Tools software. Once programmed, the R8's settings are retained even after power is removed. The R8 can be reprogrammed with new settings as often as needed.
The R8 is MIDI-powered, and requires no batteries or power supply to operate with most MIDI products (for more information read the Power FAQs). A MIDI indicator LED lights up when the product is powered and flashes when MIDI data passes through it.