The RadioPopper Jr2 Receiver for Canon is a 16 channel, four group radio receiver that operates on the 902-928 MHz ISM band and is capable of adjusting the output of the flash using the separately purchased Jr2 Transmitter. Triggering and control range with both methods is from 300-1750' depending on conditions and environment.
The Jr2 receiver's simplified, intuitive backlit display works on an easy two-button - Menu/Select principle that indicates power level, local, or remote control and remaining battery power. The receiver gets 8-10 hours of run time on two AAA batteries and weighs 1.9 oz. A 3.5mm sync cable, phono plug adapter, and 2.5mm adapter are included.