WELCOME TO MAHA *MAHA USYK-3B Wireless Hot Shoe Flash Remote Slave Trigger Use this flash trigger to make the master flasher to control remotely the auxiliary one flash synchronously without the need of connecting wires To sense light from the master flash so as to trigger the slave flash wireless Work with most flash units using ISO universal hot shoe like Nikon, Sigma, Olympus, Pentax (except Canon flash) 1 x Wireless Hot Shoe Flash Remote Slave Trigger This slave trigger NOT fit for Minolta / Sony / Canon flash The Wireless Hot Shoe Flash Remote Slave Trigger adopts optical theory making the master flasher to control remotely the auxiliary one to flash synchronously without the need of connecting wires. It features small in volume, good-looking in exterior, high in flexibility and stable in performance, it can also artificially create different kinds of effect. Use this flash trigger to make the master flasher to control remotely the auxiliary one flash synchronously without the need of connecting wires To sense light from the master flash so as to trigger the slave flash wireless Work with most flash units using ISO universal hot shoe like Nikon, Sigma, Olympus, Pentax (except Canon flash) NOTE: This slave trigger NOT fit for Minolta / Sony / Canon flash. Package Included: 1 x Wireless Hot Shoe Flash Remote Slave Trigger