The only difference is Power. The 2405CX is an excellent 2400 watt-second power on its own, and the ideal companion to the 1205CX.Since both power supplies have identical control panels, there will never be any confusion when it comes to changing power levels or ratios. Power distribution is symmetrical/asymmetrical from one to four light units. The ready signal is visual and illuminates when the power level is 100%. Other features include sync outlet, push to reset circuit breaker, fast/slow recycle, and auto dump when power levels are changed or the unit is turned off. 9, 3.5, 2, 4. The item "Speedotron Black Line Studio Strobe Lighting 2405 CX Power Supply Pack VGC 2400" is in sale since Wednesday, December 23, 2020. This item is in the category "Cameras & Photo\Lighting & Studio\Flash Lighting\Flash Heads & Power Supplies". The seller is "bnick20000" and is located in Chicago, Illinois. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Indonesia, Taiwan, South africa, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, Mexico, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Antigua and barbuda, Aruba, Belize, Dominica, Grenada, Saint kitts and nevis, Saint lucia, Montserrat, Turks and caicos islands, Barbados, Bangladesh, Bermuda, Brunei darussalam, Bolivia, Egypt, French guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Cayman islands, Liechtenstein, Sri lanka, Luxembourg, Monaco, Macao, Martinique, Maldives, Nicaragua, Oman, Pakistan, Paraguay, Reunion, Uruguay.