Our switches have standard 3.5 mm (1/8") jacks. Our switch adapted products have the same size plugs. All our switch adapted products are interchangeable with all of our switches. (If there is an incompatibility issue, we will state this in the product description.) Our switches and switch adapted products are compatible with other popular assisitive technology sellers switches and devices.
Older switches and switch adapted products used 1/4" plugs and jacks. If you want to use an older product with a newer one, you will need to purchase an adapter. More information on assistive technology and terminology can be found here.