The elinchrom skyport rx transceiver is designed for use with the elinchrom rx heads by simply plugging the module into the rx socket on any rx compact head power pack or ranger flash in addition to a four channel radio trigger system for firing the the flash the output from the heads and power packs can be controlled in 110th stops and the modelling lamps can be switched on or off from the transmitter the rechargeable battery charger included can give up to 50 hours of use if you wish