The Nikon WR-R11b/WR-T10 Remote Controller Set offers an effective solution for triggering wireless cameras and flashes. This set comprises the WR-T10 Wireless Remote Controller and the WR-R11b Remote Controller, designed for use with cameras equipped with an accessory terminal. Nikon WR-R11b Remote Controller The WR-R11b Remote Controller is specifically designed for Nikon cameras equipped with an accessory terminal. When paired with the WR-T10 or WR-1 Wireless Remote Controller, it enables wireless shutter triggering. Furthermore, it can activate certain radio-enabled flash units and function as a master controller to trigger up to 64 transceiver units. To enhance its functionality in more crowded settings, it offers three selectable radio frequencies for dependable operation. Nikon WR-T10 Wireless Remote Controller Transmitter The WR-T10 Wireless Remote Controller Transmitter by Nikon is specifically designed to function in conjunction with the Nikon WR-R10 Wireless Remote Controller transceiver, which is sold separately. When paired, these devices enable wireless control of the shutter release on Nikon DSLR cameras. The WR-T10 and WR-R10 units utilize radio frequencies for communication, allowing a single WR-T10 controller to trigger multiple Nikon DSLR cameras that are equipped with WR-R10 units. The WR-T10 can control the shutter on an unlimited number of cameras with a paired WR-R10 unit attached. Three radio frequency channels are available for use, to prevent interference when multiple pairings or photographers are shooting in one location. Useful for triggering the shutter remotely when using slower shutter speeds, to prevent camera movement. Range from the WR-T10 to WR-R10s is 66 feet (20 meters).