The #8210 is for Pride (and some other manufacturers) standard and heavy duty chairs made before November 2006 that has a long one piece cord with a 90 degree “L” connector plug on the end of the cord that plugs into either a control box mounted on the side of the motor, or on two motor chairs, a control box mounted under the chair that both motors plug into. 

This is the only Dewert hand control that works with a control box mounted under the chair that has two motors that pick the chair up and down.  This control will only work with Dewert systems, and will work as long as it has a long one piece cord with a 90 degree “L” connector plug.  If you don’t know whether your chair has one or two motors, lie the chair down on its side and look underneath; there will either be one motor or two motors that raise and lower the chair.  

The original controls like this are extremely hard to get, so we usually substitute one of the new model quick disconnect controls, and we also include an extension cable, so that the cord will be long enough to reach the control box mounted to the motor.  It works the same way; it’s just an upgrade to the original one piece cord controls.