YN560-TX, manual flash controller, made specially for Yongnuo YN-560III made after January of 2013 year, but if you want to use it with our other Yongnuo flash speedlite, you just need the transceiver of Yongnuo RF-602, RF-603, RF603 II, because YN560-TX has built-in wireless trigger system. Features: Adjust flash function though the controller directly. Wireless triggering function. Set group, up to 6 groups. Set the flash output and flash mode. Modify multi flash frequency and count. Modify zoom for each group. Compatible with RF602 / RF603 / RF603 II. Transmission Range: 100 Meters. Large and clear screen, user friendly interface. Powered by two AA batteries.(not included) Specifications: Type: Wireless controller Distance: 100m Channel: 16 Flash mode: M / Multi Group control: A / B / C / D / E / F Zoom range: 24-105mm Shutter interface: 2.5mm Battery: 2 * AA batteries (not included) Item size: Approx. 9.1 * 7 * 4.3cm / 3.6 * 2.8 * 1.7in Item weight: 97g / 3.42oz Packge size: 10.8 * 8.5 * 6.1cm / 4.2 * 3.3 * 2.4in Package weight: 140g / 4.92oz Compatible with: Yongnuo YN-560 III Yongnuo RF-602, RF-603, RF-603 II Other speedlite (must work with RF602 or RF603 or RF603 II receiver) ALL Nikon DSLR Camera. Package Includes: 1 x YN560-TX Wireless Controller 1 x Manual in English and Chinese 1 x Original box