Power Supply: 5.3Vdc 650ma (x2) Frequency Band: 2.4-2.525 Ghz Working Distance: 100m Line Of Sight Dimensions: 132 x 90 x 20mm (x2) Weight: 226g Each Unit. An excellent cost effective wireless DMX receiver & transmitter set. Perfect for applications where wiring from a controller to DMX lights is hard to install easily. The WIRELESS-TR set is easy to use and comes in the form of a male and female 3 pin XLR connectors. Simply plug the male XLR into a DMX controller and the female XLR into the first DMX light in the chain- each plug requires power so they are supplied with a UK power supply. There are 7 different working frequencies to choose from- these are selected by pushing a small switch on each connector which will display a different colour LED. The frequency selection should be done before connection to any lights or controller and the LED's should be set to the same colour- this will allow the user to use multiple DMX lines in one venue or if one frequency is already being used simply select another frequency. Once connected and a DMX signal is seen the receiver LED will flash green and the transmitter will flash red. A brilliant way of cutting down on time consuming cable runs. A working distance of 100m can be achieved depending on conditions.