This is a small, discreet lever-style switch that is useful for people with muscular weakness as it can be positioned almost anywhere, such as tucked into a hand of velcro'd to the side of a wheelchair. The activation pressure can be varied to reduce accidental switching if necessary as on the back there is a slider with five pressure settings (80 to 215g).
It measures just 50 x 35 x 10 mm.
I have often recommended this switch to adults who use it as a replacement for their mouse button. It can be glued or velcro'd to the side of a keyboard where many people find it very comfortable to use.
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