MDS - 125 kHz prox modules

MDS - 125 kHz prox modules

Extremely compact and powerful, the STid’s MDS 125 kHz OEM module is designed to be easily integrated into the majority of applications and identification equipment. Thanks to its external antenna it allows a great modularity: it is possible to adapt the external antenna to the context of use.

  • MDS 1
  • MDS 2


picto performane

Reading performances and reliability

The MDS Module allows reading distances of up to 25 cm with the standard antenna and a card.



Easy integration and migration

The MDS OEM module is an obvious choice in all your identification, proximity access control and time attendance applications. It is extremely compact and very easy to integrate in almost all environments (handled terminals, embedded applications ...). Thanks to a wide choice of communication protocols, it will be immediately compatible with your existing systems. Its external antenna makes it adaptable to many mechanical constraints.

Examples of integration:

  • Restricted areas
  • Handled terminals & readers
  • Fast access corridors / gates…

Standing the test of time

The electronics is protected in waterproof resin providing excellent mechanical and weather protection.


MDS Resistance 2

Data sheet

  • Frequency
    Frequency: 125 kHz
  • Chip
    Chip: EM
  • Functions
    Functions: Read only
  • Interfaces
    Interfaces: TTL (Clock&Data protocol (ISO2), Wiegand)
  • Reading distances
    Reading distances: 0 - 25 cm
  • Power supply
    Power supply: 5 VDC (4.5 to 5 VDC) / Consumption: Typ. 60 mA
  • Material
    Material: ABS / Resin electronics depending the version
  • Color
    Color: Grey (resin version)
  • Dimensions (h x w x d)
    Dimensions (h x w x d): 70 x 30 x 10 mm / 2.76’’ x 1.18’’ x 0.39’’ - Antenna: 70 x 90 mm / 2.76’’ x 3.54’’
  • Operating temperatures
    Operating temperatures: -20°C to +70°C / -4°F to +158°F

Plans FT MDS


Part numbers

Picto R Read only


Electronics with resin - TTL:


Electronics only - TTL:


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