We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Small black plastic RFID reader with USB cable

YINGHUA

YINGHUA IDReader03-01 125kHz RFID USB Door Lock

SKU CH-21YH-7E21F

USB-powered 125 kHz RFID reader reads EM4100 cards from 5–8 cm for access-control systems

  • TypeChain Guard
  • MaterialMetal
  • FunctionEntrance
  • Plug-and-play USB reader needs no driver installation
  • Reads EM4100 cards at 125 kHz frequency
  • Compact 9.8 x 6.3 cm design fits tight spaces
  • Diagnostic LED and buzzer confirm each successful read
  • Powered directly from USB with no external supply

125kHz USB RFID Reader for Access Control

This device reads EM4100 cards and tags at 125kHz and connects to a PC through a standard USB cable. It draws power directly from the port so no external supply is needed. The reader outputs the first ten decimal digits of each card by default and works driverless on Windows 2000, 2003, XP and 7. A built-in buzzer and LED give immediate feedback on every scan.

Plug-and-play desktop access, not outdoor mounting

The unit suits offices, hotels or utility-meter projects that need a simple desktop enrolment station. It is not weather-sealed for direct exterior installation and the 5 to 8 centimetre read range rules out long-distance or hands-free gate operation. Buyers who need a rugged outdoor keypad or a controller with relay outputs should look elsewhere.

USB interface decides compatibility

The sole connection is a USB-A plug that supplies both power and data at 106 Kbit/s. If the host system lacks a free USB-A port or cannot accept a keyboard-emulation device, this reader will not integrate.

Highlights

  • Plug-and-play USB reader needs no driver installation
  • Reads EM4100 cards at 125 kHz frequency
  • Compact 9.8 x 6.3 cm design fits tight spaces
  • Diagnostic LED and buzzer confirm each successful read
  • Powered directly from USB with no external supply

Specifications

TypeChain Guard
MaterialMetal
FunctionEntrance

Questions about this item

How much power does the USB RFID reader draw when it runs continuously?

It draws DC 5 V at ±5 % directly from the USB port with no external supply needed.

Which operating systems does the driverless USB reader support out of the box?

Works plug-and-play on Windows 2000, 2003, XP and Windows 7 without installing a driver.

Will the 125 kHz EM4100 reader recognise older proximity cards already in use?

Yes, it reads all 125 kHz EM4100 cards and tags at 5–8 cm distance.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.