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Hello! I'm a chat assistant and I have read the user manual for the FK-760 keyboard. This manual includes information on how to install the keyboard, its specifications, and troubleshooting tips. I can answer your questions about the device. The device is wireless keyboard with trackball, designed for comfortable use.
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How do I install the keyboard?
What kind of batteries should I use?
What is the working range of the keyboard?
What should I check if the keyboard is not working?