TechScan Multi-Level Augmentative Communication Device These are scanning versions of the Tech/Talk and Tech/Speak devices. They are available with a black grid on a grey base. Prompt lights sit in the grid above the overlay. No need to punch holes in your overlay. They can be used through touch as well as switch(es). Tech/Scan 8
With 8 messages on 8 levels, this model has 2 scan modes - linear and step scan. Tech/Scan 8 Plus
As above, but with additional, optional auditory prompts at each level. This model includes rechargeable battery and charger. Tech/Scan 32
With 32 messages on up to 6 levels, this model has 3 scan modes - row/column, linear and step scan. Tech/Scan 32 Plus
Like the Tech/Scan 32 with 6 levels, but with additional, auditory prompts at each level. This model includes a rechargeable battery and charger. At last - the next step in easy-to-use communication aids! - article by Roger Bates Other AMDi Tech Portable Communication Aids and accessories | 
