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White rectangular access control terminal with LCD screen and numeric keypad

ZKTECO

ZKTECO SC203 access control terminal 30000 users 50000 logs

SKU CH-P17Z-HJ9JW

Manages 30,000 ID cards and 50,000 transaction logs with TCP/IP, RS232/485 and USB connectivity for door access control

Mode: Select SC203+ID

  • Supports up to 30000 users with ID card capacity
  • Stores 50000 transaction logs for attendance tracking
  • Connects via TCP/IP, RS232/485 and USB-Host
  • Controls door lock, sensor, exit button and alarm
  • Wiegand input and output for master-slave or panel integration

Purpose and fit

The SC203 is an access control terminal built for offices, small factories and similar sites. It stores up to 30000 ID cards and 50000 transaction logs, and it runs on a 12 V DC supply. Communication options include TCP/IP, RS232/485 and USB-Host for data transfer. The unit also provides Wiegand input and output for master-slave setups or connection to a control panel.

Upgrade path

It replaces standalone keypad or single-door units that lack network connectivity or multi-door coordination. The jump is worthwhile when you need centralised management via PC software, anti-passback enforcement, or the ability to link an external reader through the Wiegand-in port. Sites that only require a single door with local operation may not need the extra interfaces.

Installation notes

Mount the terminal, wire the lock, door sensor, exit button and alarm to the access control interface, then connect power and the chosen data link. Common issues include incorrect Wiegand polarity between master and slave devices, mismatched baud rates on RS232/485, and forgetting to configure the door sensor delay in software. The LCD menu and audio prompts guide basic setup, while advanced parameters are set from the PC client.

Highlights

  • Supports up to 30000 users with ID card capacity
  • Stores 50000 transaction logs for attendance tracking
  • Connects via TCP/IP, RS232/485 and USB-Host
  • Controls door lock, sensor, exit button and alarm
  • Wiegand input and output for master-slave or panel integration

Specifications

No published specifications for this item yet.

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Questions about this item

What power supply does the ZKTECO SC203 terminal require?

The terminal operates on a 12V DC power supply, which must be provided separately for the unit and any connected electric lock.

How is the device mounted and which wiring step is often missed?

Mount the terminal on a flat wall surface, then connect the 12V DC supply and wire the lock, door sensor, exit button and alarm to the access control interface; the Wiegand in/out links for master-slave or panel integration are frequently overlooked.

Which components will need replacement over time?

The external RFID cards (ID standard, IC optional) and the connected electric lock mechanism are the parts most likely to require replacement after extended use.

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