Carpentersville, IL (March 1, 2018) - OTTO (www.ottoexcellence.com), an industry leader in the design and manufacturing of control switches, joysticks and grips, announces the TC-3 and TC-4 Keypad Switch Modules. The TC Series is a self-contained, sealed switch module with up to 5 positions that can be used in a grip, front panel or hand held device and is especially useful in cursor control or data entry applications. The advantage of the TC module is that it incorporates keypad functionality within a very small footprint, at slightly over an inch in diameter. Standard or custom legends are available and can be LED backlit. Standard termination options include flying leads, ribbon cable (with or without AMP connector), FPC (flexible printed circuit) and FFC (flexible flat cable). Tested to three million cycles, the TC Series has an operating/storage temperature range of -40°C to 85°C and is sealed to IP68S. TC Keypad Switch Module features include: • Sealed to IP68S • 3 million cycle electrical life • LED backlight option • 5 termination choices • Standard and custom legends available The TC Series is ideal for medical applications.