Extender Inflat 1 2 Leg 12 For 7450AD & 7450AS Training Stairs Ramps INTELECT LEGEND XT SYSTEM WITH stretchable sides so you INTELECT LEGEND XT SYSTEM WITH CART * 4 Channel Combination * Easy to add modularity allows the addition of two additional channels of electrotherapy light therapy or a battery module * High contrast 5 (13 cm) FSTN LCD monochromatic user interface * Two independent electrotherapy channels expandable to four independent channels * Multiple waveform electrotherapy six clinical waveforms: Interferential Premodulated High Volt Russian Symmetrical Biphasic and Microcurrent * Documentation of treatment data with Patient Data Cards * User defined protocols for your specific needs * Dual frequency ultrasound at 1 or 3 Relieves pain and improves muscle performance * System is a battery operated wireless pulse generator that sends electrical impulses from a remote control to a receiver (round disk) with electrodes attached to them that are placed on the body to stimulate the nerves causing pain * Wireless remote controls the On Off Intensity and Mode functions of the receiver This inflatable extender will fit #7450AD & 7450AS