Key facts
- Brand
- Elatec
- Model
- TWN4 MultiTech 3 M LF
- Industry
- Electronics
- Documents
- 8
- Languages
- EN
- Last added
- 2023-11-15
Start here
Elatec TWN4 MultiTech 3 M LF RFID Reader User Manual
This user manual describes the TWN4 MultiTech 3 M LF, a compact RFID reader module from Elatec that integrates 125 kHz RFID read/write capabilities. The module is intended to be integrated into a host device and provides access to common host interfaces such as USB, serial (TTL) and I²C through an on-board connector. Applications mentioned include print solutions, healthcare applications, driver identification and POS integration.
The manual covers the scope of delivery, intended use, safety information for unpacking, handling, maintenance and disposal, technical data, and the reader's mode of operation from power up and enumeration through transponder detection and USB suspend mode. It also contains compliance statements for the EU, FCC, IC, China, the United Kingdom and other regions, plus an appendix with terms, abbreviations and relevant documentation.
ELATEC TWN4 MultiTech 3 M LF specifications
| Power supply | 4.3 V - 5.5 V via micro USB; 3.3 V ± 5% via connector CNB |
|---|---|
| Current consumption | RF field on: 90 mA typically; sleep: 500 µA typ. |
| Antenna | LF antenna (125 kHz) |
| Antenna dimensions | 49 x 34 mm / 1.93 x 1.34 inch |
| Antenna number of turns | 123 |
Source: Elatec TWN4 MultiTech 3 M LF RFID Reader User Manual
All ELATEC TWN4 MultiTech 3 M LF documents by type
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Mounting, wiring and first power-up. Read it before the hardware goes in.
Questions answered in these manuals
What power supply does the TWN4 MultiTech 3 M LF require?
It can be powered with 4.3 V to 5.5 V via micro USB, or with 3.3 V ± 5% via connector CNB. An external power supply must be a limited power source with a short-circuit current below 8 A.
What happens when the reader detects a transponder?
The reader sends the ID to the host, sounds a beep, turns off the green LED, blinks the red LED for two seconds, then turns the green LED back on. During the two-second timeout the same transponder is not accepted again.
What interfaces does the TWN4 MultiTech 3 M LF support?
It supports USB, serial (TTL), and I²C interfaces via onboard connectors.
How does the device detect a transponder?
It sends the ID to the host, sounds a beep, turns off the green LED, blinks the red LED for two seconds, then turns the green LED back on.
What interfaces does the TWN4 MultiTech 3 M LF HF support?
It provides access to common host interfaces such as USB, serial (TTL), or I²C via an on-board connector.
Do I need to install external antennas?
No, the module includes built-in LF and HF antennas.