This listing is for one Quanser Shaker / ShakeTable II Single Axis Earthquake Simulator + Power Module. Also included is the accelerometer module and cables between the shaker and the controller. Please note, there is no controller or data acquisition modules included. Because if this, we weren't able to fully test the system. Power supply module was tested for +/- 12v only. Table moves free and smooth on the screw slide. No further testing has been done, and we are selling this as-is. Please make sure this works for your needs before purchase.