The Profoto Air Remote Transceiver is designed to be used with the Profoto Pro-8a and 2400W/s power packs as well as the Profoto D1 Air series monoheads.
This proprietary radio slave transceiver can control an unlimited amount of power packs and heads on eight channels. The Profoto Air Remote Transceiver can mount to your camera’s hot shoe, or sync to your flash terminal for firing.

The Profoto Air Remote Transceiver uses 2 AAA batteries and a frequency of 2.4GHz with a range of 300m. It can sync up to 1/250 second with a focal plane shutter camera, and 1/500 second with a leaf shutter camera. Its triggering speed is over 100 fps.