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Black rectangular USB RFID reader, compact plastic body, 9.8 by 6.3 cm, LED indicator

YINGHUA

YINGHUA 125Khz RFID USB Reader EM4100 IDReader03-02 Door Lock

SKU CH-MPGX-5PMRX

125 kHz USB proximity reader reads EM4100 cards at 5–8 cm, driverless on Windows, 106 kbit/s, 70 g

  • Main functionEntrance
  • Product typeChain Guard
  • Main materialMetal
  • Plug-and-play USB reader requires no driver installation
  • Reads EM4100 cards at 125 kHz from 5-8 cm
  • Waterproof design with diagnostic LED suits entrance use
  • Powered directly from USB port without external supply
  • Compact 9.8 x 6.3 x 1 cm form factor weighs 70 g

RFID USB Reader for Access Control

This YINGHUA device reads 125Khz EM4100 cards and tags at a distance of 5 to 8cm. It connects via USB and draws power from the port, requiring no external supply or driver installation on Windows 2000, 2003, XP or Windows 7. The unit weighs 70g without the cable and 90g with it.

Suits simple entry systems and ID management

It suits installers building access control, hotel lock or utility meter systems that use 125Khz EM4100 credentials. It does not suit projects needing multi-frequency support, encrypted card reading or network-connected controllers. Buyers who need longer read ranges or different card formats should look at other equipment.

Fixed 125Khz operating frequency

The reader operates only at 125Khz and communicates at 106Kbit/s. It outputs the first 10 decimal digits of the card ID by default, with the last 8 digits available on request. This single frequency and protocol determine whether the reader matches your existing cards and infrastructure.

How it compares

Measured against everything we stock in Door Lock Sets & Deadbolts, at today’s prices. Recalculated every night.

Price $237.99
Pricier than about 86% of the 2,145 comparable items (median $55.99).

Specifications

Product
Product typeChain Guard
Size & build
Main materialMetal
More details
Main functionEntrance

Questions about this item

What USB cable length comes with the 125Khz RFID reader for door-lock mounting?

The reader includes a USB cable that brings total weight to 90g; the cable itself is not separately measured in the specifications.

How do you install the EM4100 USB reader so Windows 2000, 2003, XP or Windows 7 recognises it without drivers?

Plug the USB connector directly into the PC; the device is powered from the port and enumerates automatically as a keyboard wedge.

When should the built-in buzzer or power LED be checked on this access-control reader?

Verify the LED and buzzer respond on every card read; loss of either signal indicates the 5V USB supply or the reader module needs replacement.

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