RC4Magic devices are coded with unique system IDs to ensure the best possible data security.  Three unique codes are provided for each new RC4Magic system.  System IDs consist of four characters that can each be a letter or number, i.e 2876, 2F7D or DFAF.  Although every system has it’s own three unique IDs, they are referred to generically as ID0, ID1, and ID2 when operating a system.  In addition, every RC4Magic device can use a Public ID, numeric code 999, which is the same on every RC4Magic system ever made.  Using the Public ID is the only way to use devices from different systems together.  No other wireless DMX system from any manufacturer provides the level of system security provided by RC4Magic private and unique System IDs — even with other RC4 users operating systems in the very same room, functional interference between separately coded systems is impossible.