All you need to do with Ball Switch is attach it to a switch activated toy and then squeeze the rubber ball.
By squeezing the rubber ball on Ball Switch you are then activating the toy. Firm pressure is required to operate so if you need help as someone.
This Ball Switch is great to develop fine motor skills by strengthening the hand allowing you to get a good grip. Not only that but the ball is rubbery and has soft thick spikes coming off meaning that you are being provided with tactile sensory input.