Yongnuo YN-560-TX Wireless Flash Controller for YN-560III Nikon D7100 D800 LF582 Support Wireless Shutter Receiver of RF603 / RF603 II. Compatible with RF602 / RF603 / RF603 II. Set group, up to 6 groups. Set the flash output and flash mode. Modify multi flash frequency and count. Modify zoom for each group. Wireless triggering function. Transmission Range: 100 Meters.