These are your basic, entry-level economic electronic voting keypads that may be ideal for your audience. They usually feature 12 buttons, no LCD screen, and each "clicker" is about the size of a credit card. Sometimes wired, but usually Infrared or radio frequncy.

Current manufacturers who make such units are Turningpoint with the RF and IR models, Keepad, a rebranding of the Turningpoint IR model, and OptionFinder Micro+. All of these feature 12 buttons with the exception of the Micro+ which has 14. The Optionfinder Micro is a 5 button multiple choice handset. The SMART Tech Response LE is a multiline LCD handset with five large buttons aimed squarely at the primary and SEN education market.