Godox DM-16 16-Channel Studio Flash Trigger + 2Pcs DMR-16 Wireless Trigger Receiver for Canon Nikon Olympus Pentax Cameras Wireless remote control system, convenient to operate, ultra-low voltage, battery saver. The transmitter is equipped with and advanced electric circuit. Circuit design with sleepy function, low power consumption. The receiver is used with altermating current, and it achieves quick response under the advanced MCU control. One transmitter can control 16 receivers at most synchronously.