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Wired 125 kHz USB RFID reader, HD-RD30

GTIN: 5907614660109 · SKU: HD-RD30

The HD-RD30 is a compact, wired 125 kHz RFID tag reader for identifying goods and people. It connects to a computer with a USB cable — the system recognises it as an HID keyboard, so no drivers need to be installed. The reader reads tags with chips such as EM4100, TK4100 or SMC4001 from up to 80 mm away and confirms every read with a light and sound signal. It is suited to warehouse inventory, time and attendance, goods records and access control.

HD-RD30 RFID reader in a black housing

Table of contents​

Specifications​

  • Material: ABS
  • Reading method: automatic
  • Read confirmation: light and sound signal
  • Reading speed: up to 200 ms
  • Reading distance: 0.5–80 mm
  • Time between reads: 0.5 s
  • Operating frequency: 125 kHz
  • Power supply: USB, 5 V DC
  • Interface: USB
  • Cable length: 140 cm
  • Device dimensions: 105 × 68 × 10 mm
  • Package dimensions: 125 × 85 × 38 mm
  • Device weight: 140 g
  • Weight with packaging: 310 g
  • Operating temperature: −10°C – +70°C
  • Storage temperature: −20°C – +80°C
  • Operating humidity: 0% – 90%
  • Storage humidity: 0% – 90%
  • Output format: 10-digit decimal
  • Supported chip types: EM4100, TK4100, SMC4001, EM4200, EM4305, T5577

Kit contents​

  • RFID reader
  • USB cable
HD-RD30 kit: RFID reader and USB cable

Features​

  • Operating frequency: 125 kHz.
  • Automatic tag reading.
  • Read confirmation with a light and sound signal.
  • Supported chip types: EM4100, TK4100, SMC4001, EM4200, EM4305, T5577.

Usage​

The device is simple and intuitive to operate, so the reader is convenient for beginners and advanced users alike.

1. Connecting the device​

  • Use the included USB cable to connect the reader to a computer or another device with a compatible USB port.
  • The reader is automatically detected as an HID keyboard. No additional drivers need to be installed.
HD-RD30 connected to a laptop with the USB cable

2. Preparing to read​

  • Make sure the RFID tag you want to read works on the supported 125 kHz frequency.
  • Bring the tag to within 80 mm of the reader.

3. Reading​

  • The reader reads the data from the tag automatically. A successful read is signalled with light and sound.
  • The data is sent to the connected device immediately and can be used in an application or system, e.g. for goods records or access control.
An RFID key fob held against the HD-RD30 reader

4. Tag recognition​

  • The reader recognises the 125 kHz tag in use (EM4100, TK4100, SMC4001, EM4200, EM4305, T5577) and adjusts its operating mode automatically — nothing needs to be switched.

5. Taking care of the device​

  • Store the reader at −20°C to +80°C to ensure a long service life.
  • Avoid humidity above 90%, impacts and contact with water.

Frequently asked questions​

Does the HD-RD30 require driver installation?
No. The system recognises the reader as an HID keyboard and installs it automatically once it is plugged into a USB port.
What tags does the HD-RD30 read?
125 kHz tags with EM4100, SMC4001, EM4200, EM4305 and T5577 chips, as well as TK4100.
From what distance does the reader read tags?
From 0.5 to 80 mm. The range depends on the type and quality of the tag.
In what format does the reader send the tag number?
As a 10-digit decimal number, typed into the active window as if it were entered on a keyboard.
Can the reader read 13.56 MHz cards?
No. The HD-RD30 works only at 125 kHz.
How does the reader confirm a read?
With a light and sound signal.

Downloads​

The manuals and datasheets as PDF, in case an offline copy is needed. Everything in them is also on this page.