Fire compatible Speedlite flashguns over distances of up to 30m. Canon Speedlite Transmitter ST-E3-RT V2 provides reliable operation even when a direct line of sight is not possible.
Unlock the power of sophisticated remote flash photography with the Speedlite transmitter ST-E3-RT (Ver.3). Control settings, fire multiple flashes and cameras effortlessly from a distance.
Canon ST-E3-RT is a compact radio transmitter that can fire up to 15 compatible Speedlite flashguns in three groups over distances of up to an impressive 30m.