L51 - 125 kHz hands-free design readers

L51 - 125 kHz hands-free design readers

The L51 is a hands-free reader well designed for your people and vehicle access control applications. With its simple compact and efficient design, the L51 fits easily in many environments. Dust, various liquid and weather-resistant, it is convenient for indoor and outdoor installations.

Picture of a L51 by STid Industry


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Reading performances and reliability

The L51 delivers reading distances up to 70 cm with a classic proximity ISO card. It is recommended for a large variety of applications where performance and reading comfort are required.

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Automatic tuning

With the new automatic tuning, the reader adapts itself to its environment and optimizes its performance.

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Easy integration

With multiple standard communication interfaces and protocols, the L51 will be immediately compatible and easy to integrate in your existing access control systems.

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Easy installation

With built-in electronics in the antenna it can be installed very simply in many places, and without setup.


Icon for the hands free solution of the L51 by STid IndustrySTid is developing ideal, practical solutions for all facilities where handling an access card or pressing a remote-control button could be awkward or dangerous for the user:


  • Access in laboratories, to limit infection risks
  • Motorcycle parking access
  • Truck access to loading ramps
  • Access to depots/warehouse, and receiving and storage areas with automatic doors
  • Access to high traffic environments (universities, events, museums, factories etc.)
  • Easy wheelchair/disabled access etc.Easy wheelchair/disabled access etc.

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Standing the test of time

The mechanical design of the L51 reader has been developed to withstand crowded environments. It can be used both indoor and outdoor, and has a strong mechanical outfit for optimum weather resistance.

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Data sheet

  • Frequency
    Frequency: 125 kHz
  • Standards
    Standards: Certification: CE
  • Chip
    Chip: EM
  • Functions
    Functions: Read only
  • Interfaces
    Interfaces: TTL - ISO2 protocol (Data Clock), Wiegand / RS232 / RS485
  • Reading distances
    Reading distances: 0 - 70 cm
  • Power supply
    Power supply: 12 VDC (12 - 15 VDC) / Typical consumption 1A (300 mA / 1,2A according settings)
  • Material
    Material: Polycarbonate Choc
  • Color
    Color: Black
  • Dimensions (h x w x d)
    Dimensions (h x w x d): 40,8 x 28,8 x 4,9 cm
  • Operating temperatures
    Operating temperatures: -10°C to +60°C / 14°F to 140°F
  • Protection
    Protection: Reinforced vandal proof structure
  • Resistance
    Resistance: Weather, water and dust resistant / Humidity: 5 - 95%

Picture of the L51's plans

Part numbers

Picto R Read only




RS232 :


RS485 :


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