UMD - Model 631
iButton Reader with Bluetooth Interface

The Unique Micro Design BlueTouch Model 631 is a Hand Held mobile iButton reader (also known as Touch Memory) with Bluetooth host interface.

Standard features include 3 user button and on-board flash memory, which can be programmed from the Host PC via the Bluetooth interface.

This enables the device operations including the three user buttons, iButton types and data transfer protocol to be easily customised and supported by UMD.


  • iButton Reader
  • Hand Held
  • Bluetooth wireless host interface
  • Three programmable buttons
  • Uses standard AA batteries
  • Reprogramable via Bluetooth interface
  • Flash memory for application program
  • Embedded Application Customised by UMD
  • Designed and manufactured by UMD
  • 12 months warranty


Physical Characteristics
Dimensions150 (L) x 62 (W) x 31 (H) mm
Weight100 grams
HousingLightweight, Ergonomic, ABS Plastic (UL 94 HB)
Environmental Characteristics
Operating Storage Temperature-10 to 60 C
Enclosure ratingIP 43
iButton ReaderDS1990A Series iButtons
Read RangeContact
Communication Characteristics
Data interfaceBluetooth Class 1 (100m Range)
Indicators2 LED's: Green Read/Red Bad Read, Blue Bluetooth Connection
Multitone Beeper
Power Characteristics
Power Source2x AA Batteries
ApprovalCE, C-Tick

UMD Model 631 Configuration Table





UMD Model 631 Bluetooth iButton Reader





With 3 Buttons, 1 Bi-Colour LED, 1 Bluetooth LED


Keypad Option



Standard UMD Overlay


Firmware Option


No Firmware Loaded

Application/Customer Specific Firmware Preloaded






Ordering Information and Pricing
Part Number Model Number Description RRP
[A] UMD Model 631 iButton Reader
M631A0001 M631A-F01 UMD BlueTouch - Mobile iButton Reader with Bluetooth Interface $655.60 U3
[B] Accessories
9-5589-010-7 TA0001 Protective Rubber Boot - Discontinued $77.00 U1
[C] iButtons (ID Only)
1-8050-900-1 DS1990A-F5 iButon Serial Number, 64 bit ROM $11.00 A
1-8050-901-0 DS1990A-F3 iButon Serial Number, 64 bit ROM $11.00 A
Contact for other iButton options.