The Elmo TT-02RX is great for displaying most material for classes and demonstrations. Elmo now has a newer model that provides better color fidelity, so if you are showing opaque objects where true color is important, e.g. art work, then you should look into the more expensive model. The controls are easy to use, including the auto focus: it really is automatic and it really does focus! My Elmo TT-02RX has been a life saver for doing many a demo. Elmo Teacher's Tool TT-02RX - Document camera - color - optical zoom: 5.2 x - motorized - 800 TVL - Hi-Speed USB - DC 12 V - Classroom Teacher Camera - B002tp8y8y - Document Reader'
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