Changsha sunsky electronic design & development Co. Ltd
voting keypad, polling system, voting system, classroom response system, polling keypad, Manufacturer and Supplier - China
1. range 100x100 meters in door 2.water-proof & easy-press buttons 3.support 16 channels Technical Specification: Appearance: Rugged ABS plastic construction, wireless hand-held design Dimension: 138 - Update: 2011-12-06