Control your camera up to a distance of 100 meters with the Pixel Control RW-221 / E3. The receiver can be placed with the hot shoe connection on top of the camera. The transmitter has the same recording functions as your camera. This allows you to set the channel to single recording, multiple recording, bulb or timer. The set works on AAA batteries. In normal use, these batteries have a lifetime of 3 years in the receiver and a life of 400 hours in the transmitter.