125KHz RFID Duplicator Copier Writer & Card Reader – T5577 EM4305
125KHz RFID Duplicator Copier Writer & Card Reader – T5577 EM4305
125KHz RFID Duplicator, Copier & Card Reader/Writer
Take full control of your 125KHz RFID access cards and key fobs with this compact, handheld RFID Duplicator from Asia-Teco. Whether you need to clone an existing access card, program a blank T5577 or EM4305 keyfob, or simply read an unknown EM4100/TK4100 card, this all-in-one device handles it all — no PC required.
Designed for property managers, security installers, hobbyists, and anyone who works with proximity access systems, this portable programmer offers standalone operation, a simple 2-button interface, and built-in LED and buzzer feedback so you always know when a read or write has succeeded.
Key Features
- Reads: EM4100, TK4100, and compatible 125KHz proximity cards & key fobs
- Writes / Programs: T5577, CET5557, CET5200, 5200, EM4305, EM4205, and EN4305 blank cards & fobs
- Standalone Operation: No computer or software needed — works entirely on its own
- USB PC Connection: Also connects via USB (Plug & Play, driverless) with Windows 2000, XP, 7, 8, and 10
- Built-in Indicators: Individual LED lights and buzzer for instant read/write confirmation
- Reading Distance: 0–6 cm
- Durable: Rated for over 20,000 read/write cycles
- Ergonomic Design: Handheld form factor with comfortable grip and simple 2-button controls
- Power: 3V via 2 × AAA batteries (not included)
Technical Specifications
| Brand | Asia-Teco |
| Model | ID125 |
| Working Frequency | 125 KHz |
| Power Supply | 3V (2 × AAA batteries, not included) |
| Read/Write Lifespan | >20,000 times |
| Reading Distance | 0–6 cm |
| Dimensions (L×W×H) | 115 × 70 × 30 mm |
| Weight | 85 g |
| PC Compatibility | Windows 2000 / XP / 7 / 8 / 10 (Plug & Play) |
| Country of Origin | Made in Mainland China |
What's Compatible?
This duplicator works exclusively with 125KHz RFID technology. It is not compatible with 13.56MHz (NFC/HF) cards such as Mifare or DESFire. Confirmed compatible blank write cards/fobs: T5577, CET5557, CET5200, 5200, EM4305, EM4205, EN4305.
For more information on RFID technology and its applications in access control, visit the NIST RFID Resources page.
Learn more: Flipper Zero
Frequently Asked Questions
Q: Can this 125KHz RFID duplicator copy any access card or fob?
A: This programmer reads standard 125KHz EM4100 and TK4100 proximity cards and key fobs. It can then write the copied data onto blank writable 125KHz cards or fobs such as T5577, EM4305, CET5200, and EM4205. It does not work with 13.56MHz (HF/NFC) cards like Mifare Classic.
Q: Do I need a computer to use this RFID copier?
A: No — the device operates completely standalone using 2 × AAA batteries (not included). It also supports USB connection to a Windows PC (Plug & Play, no drivers needed) for additional functionality if required.
Q: How do I know if a card or fob has been successfully copied?
A: The built-in LED indicator lights and audible buzzer will signal a successful read or write operation, making it easy to confirm each duplication without needing a screen or software.
Q: What blank cards or key fobs should I buy to use with this programmer?
A: You will need blank 125KHz writable tokens. Compatible formats include T5577, CET5557, CET5200, 5200, EM4305, EM4205, and EN4305 cards or key fobs, which are widely available separately.