_UMD - Model 250-S
Industrial Programmable Keyboard

The UMD Model 250 Series Industrial Keyboards are part of the Unique Micro Design ProtoLink Architecture family of products. They are fully programmable sealed keyboards using positive tactile feedback keyswitches and a sealing overlay. The 128 keys are arranged in an 8 x 16 matrix. Each of the keys may be individually programmed with multiple keystroke sequences. This ensures total flexibility for your layout and means it can be tailored to suit your software exactly.

The Model 250 Series also feature inbuilt keyboard wedge, two serial ports and a "Wand Style" Bar Code decoder. This means all your requirements are integrated into a single package. The Model 250 can operate in either keyboard mode or serial mode. In keyboard mode, it becomes an IBM compatible PC/XT/AT or PS/2 keyboard and may be used in conjunction with the existing keyboard. In serial mode, data is sent via a serial port.

The Model 250 Series is constructed with a cast aluminium surround for strength and reliability in the most demanding environments, an optional sealed cable entry system is also available.

Obsolete Product Line - Contact UMD Sales for Alternatives


  • Up to 128 keys in an 8x16 matrix
  • Fully customiseable key overlay
  • All keys individually programable
  • Multiple shift levels
  • Key layout within grid can be specified on order
  • In-built keyboard wedge and 2 serial ports
  • 16 programmable LED indicators
  • In-built "Wand Style" Bar Code decoder
  • No switches to be tampered with
  • Two operation modes: keyboard or serial
  • Internal buzzer, Optional keylock
  • Heavy duty cast aluminium surround
  • Suitable for hygenic and wet environments
  • Optional Expanded I/O module, adds two serial one parallel interfaces and a cash drawer trigger interface
  • Customisation service available
  • 12 Months warranty


Physical Characteristics
Dimension375(w) x 261(d) x 31 front - 70 top of lid)(h)mm
Weight 4.0kg
PowerVia keyboard interface or external plug pack
Keyboard interfacePC, AT or PS/2 protocols (USB available upon request)
Serial interface2 x RS232C (DTE) ports D9 connector
Bar Code DecoderDigital wand type (TTL) with AMP D9 connector
Optional2x Serial DB9 and 1x Parallel BD25 with IO Expansion Board
Keyboard Layout
Key matrix8 x 16 (128 keys)
Spacing19.05 mm centres
Reliability1,000,000 operations

The Model 250 Custom Keyboard can be uniquely configured to your customer requirements.
Please contact Technical Support to discuss customisation and other options.

Obsolete Product Line - Contact UMD Sales for Alternatives