This device is a Kofax K-4100 model fax machine. It can be used to send and receive documents over telephone lines. Main features: The device has a numeric keypad, control buttons such as "START" and "STOP", and a small display screen. Function: It is primarily used for sending and receiving faxes, designed for office use. Condition: The device appears to be in good condition, with a sheet of paper inside the feed slot. Additional information: Kofax is a company specializing in digital process automation solutions, including fax machines.