RDM (remote device management) is a protocol designed by a task group under the overview of the ESTA Technical Standards Program to enable two-way communication over DMX. It might sound complicated, but in practice it’s quite straightforward and can be an invaluable tool for lighting designers. Having two-way communication means that the lighting fixtures can send data back to the controller rather than just receiving commands.To use RDM, you just connect your DMX light fixtures and controllers as you normally would. The only difference is that to use RDM, both the controllers and light fixtures must be compatible. Once the system is connected, your controller will recognise the RDM fixtures connected to it and will give you access to several parameters that can be accessed from RDM (called PIDs). What these are varies depending on the fixture but there are certain PIDs that are standardised across different manufacturers. Find out useful information about a fixture