Low-Tech AAC systems include any symbol system that does not use a battery. Low-tech systems can range from objects to pictures to text and can contain as few as 1-object/picture/word to 100+ pictures/words
Mid-Tech AAC Systems include devices that require batteries and can provide voice output. These devices range from simple single-message voice output devices (e.g., Big Mac) to static display voice output devices. These devices are usually easy to program and cost less than $500. The following are a few examples of the many Mid-Tech (Light-Tech) AAC Systems.
High-Tech AAC Systems are electronic computer-based voice output systems. They are usually more sophisticated and more robust systems. High-Tech devices can be either dedicated (e.g., only used for communication) or computer-based (e.g., laptop computer, iPad, Tablets). The following are a few examples of of the many dedicated High-Tech speech generating devices.