Wireless DMX transmission technology by LumenRadio — controls fixtures via radio frequency without cable runs.
Technical Details
The CRMX protocol transmits full 512-channel DMX universes with an update rate of 44 Hz and a minimal latency of under 5 milliseconds. Encryption is handled via AES-128 standard, while automatic frequency management (AFH - Adaptive Frequency Hopping) avoids interference with Wi-Fi and other 2.4 GHz devices. CRMX modules are available as OEM components in various form factors: stick modules (40 x 18 mm), PCB modules (25 x 13 mm), and external transceiver boxes. Power consumption is 150 mA in transmit mode and 120 mA in receive mode at a 5V operating voltage.
History & Development
LumenRadio developed CRMX in 2008 in response to the unreliable first generation of wireless DMX systems. The first commercial implementation occurred in 2009 in Ayrton moving heads, followed by licensing agreements with ARRI (2011), Astera (2012), and over 100 other manufacturers by 2024. The decisive breakthrough came in 2013 with its integration into broadcast-ready LED panels, making CRMX the de facto standard for wireless lighting control in film and television.
Practical Application in Film
CRMX enables wireless control of LED panels in inaccessible positions such as vehicle interiors or historic buildings without the need for cable runs. On "1917" (2019), Roger Deakins controlled hundreds of CRMX-enabled LED strips for the continuous camera movements through the trenches. Typical workflows include grouping lights into separate DMX universes (Universes 1-8 possible) and using repeaters for larger sets. The main advantage lies in time savings during rigging and the ability to adjust lighting during live takes without laying cables or coordinating radio systems.
Comparison & Alternatives
CRMX primarily competes with W-DMX from Wireless Solution, with CRMX scoring points for lower latency and better interference resistance, while W-DMX offers a greater range. Art-Net over Wi-Fi requires dedicated network infrastructure for stationary installations. Newer developments such as RDM over CRMX (since 2020) enable bidirectional communication for remote configuration of lights. The licensing fees of approximately 15-25 Euros per module make CRMX more expensive than open standards, but they are justified by its reliability in professional productions.
Current News
CRMX technology is increasingly establishing itself as a standard in professional film lighting. LED manufacturers such as Nanlux are integrating CRMX compatibility into their latest systems, like the 5C series, further simplifying the wireless control of film lights. This development underscores the growing importance of CRMX for modern lighting setups on film sets.