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Heng Yu is a Hong Kong based company, with a strong R&D center in our Hong Kong headquarter and powered by our own modern production campus in Zhuhai (Guangdong, China). The two offices are linked up together by the world’s largest and amazing bridge over the sea.

Get In Touch

Phone: +852 2394 1852
Address: Room 1503-05, NanFung Commercial Center, 19 Lam Lok Street, Kowloon Bay, HK

Our Location

852-2394 1852



Important Features

  • Disinfectable Hygiene PC-Keyboard with Clean Function Hot Key
  • Full 104/105 key layout. Multi-country layouts are avaiable
  • USB interface or Wireless interface are available
  • Both USB and Wireless versions support USB firmware upgrade
  • USB cable has the optional USB connector cover plug (for IP68 version)
  • Wireless version is Battery Replaceable, using 4 x AAA size batteries
  • Support White or Black color

The K104R is a high quality and reliable hygiene full size keyboard, which is specifically designed for the use in hospitals and healthcare applications. The silicon membrane protects the key field against ingress of dirt and fluids. The K104R impresses with its low force key actuation and precise key guidance. It is highly recommended for heavy duty type writing in hygiene-critical environments, particularly for office and administration applications. Additional benefits are:

  • Thorough surface disinfection by spray/wipe sanitizing on flat keyboard skin without edges and seams. 
  • Clean Function allows for disabling the keyboard during cleaning (“Fn”+”Clean”). 
  • Suitable for most common hospital disinfecting solutions
  • Replaceable keyboard skin for clinic disinfection by steam pressure processing
  • Touch proof disinfection of the surface of the keyboard body by spray/wipe sanitization
  • Surface disinfection instead of invasive submersion cleaning:
    • Avoids outer and inner re-contamination by polluted suds
    • No risk of germ transmission by fluids leaking or dripping off the product
    • No contact with hollow spaces

Technical Data

Electronics [USB version]

  • Voltage: 5V USB
  • Power Consumption: less than 100mA

[Wireless version]

  • Power Supply: “AAA” x 4
  • Input Voltage Range:  6V


  • Working current: 4mA 
  • Sleeping current: 30uA


  • Working current: 5mA 
  • Sleeping current: 250uA


  • Number of Keys: 104 (US) / 105 (EU)
  • Key structure: Scissor key with 2.5mm travel distance rubber dome
  • Key strokes life: 10 million


  • Storage temperature: -10°C to +55°C
  • Operating temperature: -40°C to +85°C
  • Operating humidity: 10 to 90%
  • Dimensions: 451.4 x 146.4 x 31.2 mm
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