SMDV Radio Trigger Set RFN 4 Nikon (RF 903)

The SMDV Radio Trigger Set RFN-4 Nikon (RF-903) is a wireless remote triggering system for Nikon cameras that operates in the 2.4 GHz frequency band with 16 selectable channels for interference-free operation. This compact trigger set allows wireless camera control up to 80 meters away and is ideal for macro photography, long exposures, and situations where physical contact with the camera must be avoided to prevent shake. The transmitter features a two-stage button operation with half-press for autofocus and full press for triggering, while the receiver offers a bulb mode function with locking for extended exposure photography such as light trails and night sky shots. Both components are powered by AAA batteries (not included) and have colored LED status indicators for focus confirmation and triggering. The receiver can also be used as a wired remote control without battery power. The dimensions of the transmitter are 8.2 x 3.4 x 1.7 centimeters, while the receiver measures 5.4 x 3.5 x 1.8 centimeters. The set includes a wrist strap with a channel selection pin for easy frequency adjustment between the 16 available channels. This system provides reliable remote camera control for photographers who need precise timing and shake-free operation in various shooting situations.