WANSEN PT-16GY 16 Channels Radio Wireless Remote Speedlite Flash Trigger Universal for Canon Nikon Pentax Olympus The remote trigger for studio flashes and outdoor flash is used as the controller of synchronous trigger studio flash of cameras. It consists of a signal sender and a receiver trigger and works by means of the frequency modulation wireless remote control. Universal hot shoe interface, compatible with Canon, Nikon, Sigma, Olympus, Pentax, etc. Globally univeral 433Mhz frequency, 16 channels. With studio flash interface, can trigger several kinds of studio flashes. Transmitting distance up to 30M, no limits with directions or angles. 1/4" nut design to be connected with tripod for stable flashlight. Speedy frequency regulation, convinient for photographers to shoot. Energy-saving design with 12V 23A battery of transmitter and 2 AAA batteries(not included) of receiver. Comes with a PC sync cord for cameras without hot shoe socket. The signal transmitter adopts the advanced circuit and components, and can transmit the coded FM wireless signal. The circuit of the transmitter has the function of standby and hibernation, thus it has low power consumption; the products can work under the standby mode for more than one year with only one battery; continuously trigger for thirty thousand times. Receiver trigger adopts dry battery for power supply, which is safe, energy-saving, and convenient. The product adopts micro-computer for controlling the decoding, Which has superior anti-interference capability; sensitive reaction speed, the highest synchronous speed can reach 1/250sec.All the models of the product uniquely have the multi-frequency isolation technique and the self coding matching function by users.