Ball Switch (Model 3Tstm)
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The Ball Switch, model 3TSTM, is designed for use by individuals with severe physical or upper extremity disabilities.This switch features a large ball with a knobby surface attached to a long tube connected to the switch box. From the other side of the switch box comes a cord which coonects to the switch-adapted toy or appliance. When the ball is squeezed, the switch activates the device.