TheElinchrom EL-Skyport Transmitter Plus comes with sixteen channels (8 in Normal and 8 in Speed mode, with 4 discreet groups for different and/or sequentially triggered lighting setups for distances up to 656′). Channels 1, 3, and 7 are compatible with all enabled EL-Skyport units, while channels 1, 3, 7, 9, 12, 15, 18, and 20 are compatible with the EL-Skyport Receiver Plus and EL-Skyport Receiver Plus HS. The EL-Skyport Receiver Plus runs on easily sourced AA batteries that are available separately. A 2.5mm sync socket extends the transmitter’s versatility to cameras without hot shoes or for hard-wired flash units. The EL-Skyport Transmitter Plus runs on easily sourced AA batteries. The transmitter does not come with batteries.DetailsTrigger reliably and adjust flash power up to 656′ away4 groups and all selection16 different channels available (8 in Normal mode and 8 in Speed mode)Quick increase or decrease of the flash power per group with Elinchrom studio strobes with built-in Elinchrom radio receiversMetal hot-shoe connector with screw lock2.5mm sync socketNormal and Speed sync mode (for leaf shutter cameras)All functions can be easily adjustedBenefitsReliable and consistent triggeringEnhanced swivel function for improved receptionContinued choices when setting up your strobesMultiple channels for more options when working with or in multiple setupsControl light power at the cameraNo fussing with button batteries, uses AA batteries available everywhereLocking functionality while connected to your cameraFlexibility of use with a 2.5mm sync socketFEATURES:2.5mm to PC Sync Cord16 Channels and 4 Groups656 Foot RangeControl Flash Power On/OffWrist StrapRuns on AA Batteries