UM-DAL is a module working on the principle of contactless reading of a unique ID number from a Unique transponder (RFID). Transmission of the read data is carried out using the 1-Wire protocol. This means that the reader is compatible with Dallas/Maxim DS1990.

  • EOL

Technical specification:

  • Vdd supply voltage: 4.5-5.5V
  • Supply current: 5-55mA
  • Rated operating frequency RF: 125kHz
  • Modulation of data received from transponder: Manchester
  • Speed ​​of data received from transponder: RF / 64 (1953b / s)
  • Antenna: external 1mH + -5%
  • Output current capacity: Dall and TransponderLed: 15mA
  • Output type Dall: open collector
  • Max. Polarization voltage of the Dall lead: Vdd + 0.5V
  • Transponder reading distance: 8-15 cm depending on the antenna
  • Maximum reading frequency: 2 transponder readings / sec.
  • Parameters of data transmission to the master device: according to the 1-Wire (Dallas) DS1990 specification

The above product is being discontinued. For new projects, we recommend using the NANO-U module.


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Thanks to this, it is possible to closely match the designed RFID device to the specificity of the target application.