Glossary of Technical Theatre Terms

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A way of transmitting DMX data from a lighting control to lighting instruments without cabling. Ideal for events and short-run shows, but in large spaces where radio microphones and lots of audience members with mobile devices also using wifi, the technology is not reliable enough for permanent installation, especially where it is going to ruin the show if a fixture suddenly stops working or turns on at full when it should be off, when it loses data. The transmitter is connected to the lighting control desk by DMX cable or by ArtNet / SACN. Some equipment is now manufactured with wireless DMX capability built-in. The time saved can be very significant, especially for outdoor, battery-powered (rechargable) fixtures, which may be used to light trees / shrubbery for an event. The equipment can be set up and operational in minutes rather than the hours it would take to run in DMX cabling safely.

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