[. . . ] Strobe controller FL-01CX Compact reliable strobe controller can remotely control the flash rate of 1 to 4 strobes. [. . . ] Servicing must be conducted by qualified service personnel. This unit is the unsophisticated type of strobe controller. You could use the automatic and manual mode to control the flash of the strobe. Connect controller to strobe ( the FL-075 or FL-1800. . . . . ) with a signal cable made of two standard 1 /4" mono jacks with proper cable. -Check that the voltage marked on the back of unit is correct for your area. While the button of POWER ON/OFF is ON , the upper red LED is lit which indicates the power of controller starts for operating. While the button of AUTO/MANU is ON , the upper red LED is lit which indicates the timer of automatic flash starts; the interval of time could be adjusted by RATE knob, and the interval of time could be from 0. 1second to 2 seconds. [. . . ] Tip or 1 /4" jack is positive signal, base negative Maintenance No user serviceable parts, refer servicing to a qualified service technician. Speed Control Specifications Power Switch Auto/Manu Trigger Number of strobe: 8 unit maximum Output signal: 10~12VDC Voltage: Refer detail the back of unit Fuse: Internal (0. 5A/250V) Dimensions: 120x65x35mm (LxWxH) Weight: 353g. [. . . ]