... ; Confidential polling to bring out the reluctant questionersl; Wireless control. Specification:Technology: Radio FrequencyFuncion: Laser pointer, ... Page up/down, Wireless mouse, Hotkeys, Teaching modeControl Distance: 30m/98feetDimesion: L= ... many forms;4. Wireless control;5. Easy to set-up and use. Voting System,E-voting, Wireless control, PH-1100 ...