Marketed by Hong Kong-based Pixel Enterprise Ltd., the Pixel TR-332 E-TTL II Flashgun Trigger for Canon and the TR-331 i-TTL Flashgun Trigger for Nikon are both broadly similar in terms of specifications, beyond their support for the two camera brands' flash exposure metering systems.

Both devices work using FSK modulation on one of 15 channels in the 2.4GHz spectrum, and are claimed to have a working range of some 65 meters (213 feet) or more. The devices each have a scratch-resistant LCD info display on both transmitter and receiver, showing the operating mode and channel, as well as the battery status. Shutter speeds up to 1/8000 second are said to be supported. Battery life is claimed at 1000 hours standby for the transmitter, and 400 hours for the receiver - each from a CR2 lithium battery.

Pricing information has not been disclosed at this time. Availability for the Canon-compatible unit is said to be this Christmas, while no date has been given for the Nikon-compatible variant.