Velleman VM138 electrical relay

Dmx-controlled Relay This module allows you to control a relay by means of the well-known DMX512 protocol. This is used to control dimmers, scanners, moving-head spots and other lighting devices with a simple wiring.
In some cases, a simple ON/OFF selection is desired. there is where this module comes in. It is actually a bus-controlled power driver. The relay will be activated when the DMX value of the set channel equals 140 or more and turns off when the value is 120 or less.

- system addresses: 512 unique addresses, DIP switch settable
- LED indication for power supply, relay output status and error situation
- "Safe DMX data stream" mode reducing interference to a minimum
- "Relay hold" function in case of DMX signal loss
- control: DMX-512, 3-pin XLR plug (incl.)