YN-560 IV Flash Speedlite is a combination of YN-560 III and YN560-TX, it has built-in wireless trigger system, so you can not only use it as flash speedlite, but also a flash controller Transmitter. Features: a, TX Master Flash mode: When you set up YN-560IV as TX mode, it can be used as a flash controller transmitter, it can trigger another YN-560 IV ( radio mode 100meters )and YN-560 III ( radio mode ), (it aso features optical slave mode for triggering other speedlites) and also can be used with RF-602, RF-603 II, RF-605 together. b, RX Slave Mode: When you set up YN-560IV as RX mode, you can use it with YN560-TX flash controller, and RF-602, RF-603 II, RF-605 single transceiver.
S1 / S2 mode --- You should use those two modes off camera f, Power saving mode
Manually set and zooming position
PC Synchronous Port Suit for: All cameras with ISO standard hot shoe.
Package Including: 1 x YN-560 IV Flash Speedlite 1 x Protecting bag 1 x Original box 1 x Manual 1 x hot shoe stand