Apartment, Multifamily & Rental Property Access Control
Apartment building access control hardware: anti-clone readers with matched fob sets, QR visitor codes, 4G controllers for rentals and UHF tags for gates.
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HF-210 Dual-Frequency 125 kHz/13.56 MHz Reader Module, USB or UART
47 × 26 mm module with on-board antenna that reads 125 kHz EM cards, or EM plus 13.56 MHz MIFARE/DESFire/NTAG, over USB or a UART/Wiegand connection.
- Dual-frequency builds read 125 kHz EM4100-family and 13.56 MHz MIFARE, DESFire EV1/EV2 and NTAG
- 125 kHz-only builds for EM credential sites, drawing less current
- USB (12 Mbps) or 3.3 V UART/Wiegand host link on a 5-pin, 1.25 mm connector
- On-board antenna; read distance 0–3 cm
- Automatic or command-triggered card reading
- Frequency
- 125 kHz + 13.56 MHz, or 125 kHz only
- Interface
- USB, or UART (3.3 V) / Wiegand
- Read range
- 0–3 cm
- Power
- 5 V DC (UART) / USB 4.3–5.5 V
- Current
- ≤ 150 mA (dual-frequency builds)
- Dimensions
- 47 × 26 × 4.8 mm
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Dual-Frequency 125 kHz/13.56 MHz Reader Module, USB or UART: overview
The HF-210 is an embeddable reader for devices that must accept 125 kHz EM proximity credentials, 13.56 MHz smart cards, or both. The dual-frequency builds read EM4100, EM4102, EM4200, EM4305 and EM4450 alongside ISO/IEC 14443A cards such as MIFARE Classic, DESFire EV1/EV2, Ultralight, Ultralight C, NTAG2xx and CPU cards, plus NFC Forum Type 1, 2 and 4 tags. Two lower-cost builds read 125 kHz EM credentials only.
Each frequency option comes with a choice of host link. The -U builds connect over USB at 12 Mbps and list Windows 10/8.1/8/7, Linux, Android and macOS as hosts. The -W-T builds offer either a 3.3 V-level UART at 115200 bit/s or Wiegand output on the same two pins, for microcontrollers and access controllers.
The antenna is built into the 47 × 26 × 4.8 mm board, and rated read distance is 0–3 cm depending on the card and installation. The module can read automatically whenever a card is presented or only when the host sends a read command, and a management tool updates its configuration parameters.
Integration notes
All builds use a 5-pin, 1.25 mm pitch connector with 5 V, ground and reset. On the UART/Wiegand builds, pin 2 is UART TXD or Wiegand D1 and pin 3 is UART RXD or Wiegand D0; on the USB builds those pins carry USB D– and D+. Supply is 5 V DC for UART builds or 4.3–5.5 V from USB. The module is rated –20 to +60 °C at 20–80% RH, non-condensing, and RoHS is listed.
More features
- 47 × 26 × 4.8 mm, about 5 g; RoHS listed
HF-210 specifications
RF & credentials
| Operating frequencies | 125 kHz + 13.56 MHz (-D builds); 125 kHz (-E builds) |
|---|---|
| 125 kHz credentials | EM4100, EM4102, EM4200, EM4305, EM4450 |
| 13.56 MHz credentials (-D) | MIFARE Classic, MIFARE DESFire EV1/EV2, MIFARE Ultralight, MIFARE Ultralight C, NTAG2xx, CPU cards, NFC Forum Type 1, 2 and 4 tags |
| 13.56 MHz protocols (-D) | ISO/IEC 14443A, ISO/IEC 18092 |
| Read distance | 0–3 cm (depends on installation and card) |
| Antenna | On board |
| Reading modes | Active (automatic) or passive (on host command) |
Interfaces
| Host interface | USB (-U builds); UART at 3.3 V or Wiegand, one of the two (-W-T builds) |
|---|---|
| Data rate | USB 12 Mbps; UART 115200 bit/s |
| Supported host OS (USB) | Windows 10, 8.1, 8, 7; Linux; Android; macOS |
| Configuration | Management tool for configuration parameters |
Electrical
| Supply voltage | 5 V DC (UART/Wiegand builds); 4.3–5.5 V via USB |
|---|---|
| Current | See build table (≤ 80 mA to ≤ 150 mA working) |
Mechanical & environment
| Connection | 5-pin, 1.25 mm pitch |
|---|---|
| Dimensions | 47 × 26 × 4.8 mm ±0.5 mm |
| Weight | Approx. 4.8–5.1 g |
| Operating temperature | –20 to +60 °C (–4 to +140 °F) |
| Storage temperature | –40 to +80 °C (–40 to +176 °F) |
| Operating humidity | 20–80% RH, non-condensing |
| Compliance | RoHS |
Build matrix
| Variant SKU | Frequencies | Interface | Current (working / standby) | Weight |
|---|---|---|---|---|
| HF-210-D-W-T | 125 kHz + 13.56 MHz | UART (3.3 V) or Wiegand | ≤ 150 mA / ≤ 120 mA | Approx. 5.1 g |
| HF-210-E-W-T | 125 kHz | UART (3.3 V) or Wiegand | ≤ 100 mA / ≤ 80 mA | Approx. 4.8 g |
| HF-210-E-U | 125 kHz | USB | ≤ 80 mA / ≤ 50 mA | Approx. 4.8 g |
| HF-210-D-U | 125 kHz + 13.56 MHz | USB | ≤ 150 mA / ≤ 120 mA | Approx. 5.1 g |
Pin definition
| Pin | UART/Wiegand builds | USB builds |
|---|---|---|
| 1 | VCC, +5 V DC | VCC, +5 V DC |
| 2 | TXD: UART TXD (3.3 V) / Wiegand D1 | DM: USB data – |
| 3 | RXD: UART RXD (3.3 V) / Wiegand D0 | DP: USB data + |
| 4 | GND | GND |
| 5 | RESET | RESET |
5-pin connector, 1.25 mm pitch.
Specifications can change between production batches. Confirm the current revision with us before placing volume orders.
Ordering options
Quote the SKU that matches your frequency, interface and mounting. Not sure? Send us your controller model and we will pick the variant for you.
| SKU | Configuration | Actions |
|---|---|---|
| HF-210-D-W-T | 125 kHz EM + 13.56 MHz module, UART (3.3 V) or Wiegand output, on-board antenna | |
| HF-210-E-W-T | 125 kHz EM-only module, UART (3.3 V) or Wiegand output, on-board antenna | |
| HF-210-E-U | 125 kHz EM-only module, USB, on-board antenna | |
| HF-210-D-U | 125 kHz EM + 13.56 MHz module, USB, on-board antenna |
Where the HF-210 is used
- Door or elevator panels that must accept existing EM fobs and new MIFARE or DESFire cards
- USB card readers built into PCs, keyboards or displays for badge log-on
- Gym and club check-in terminals serving a mixed EM and 13.56 MHz membership base
- Service terminals and ticketing machines needing a thin, antenna-included reader
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HF-210 FAQ
Which build do I need for a site with both prox fobs and MIFARE cards?
Choose a dual-frequency build: HF-210-D-U for USB hosts or HF-210-D-W-T for UART or Wiegand. The -E builds read 125 kHz EM credentials only.
Can UART and Wiegand be used at the same time?
No. On the -W-T builds, pins 2 and 3 carry either UART (3.3 V, 115200 bit/s) or Wiegand, one or the other. Tell us which you need when ordering.
Does it read ISO15693 or FeliCa cards?
No. The 13.56 MHz side supports ISO/IEC 14443A and ISO/IEC 18092 cards. For ISO15693 or FeliCa in the same 47 × 26 mm footprint, see the HF-220 USB module.
What read distance should I expect?
0–3 cm, varying with card type and installation. The antenna is on the board, so keep metal away from the reading area.
Which host systems work with the USB builds?
Windows 10, 8.1, 8 and 7, Linux, Android and macOS are listed for the USB builds.
Before you buy
Related buyer guides
Wiegand vs OSDP vs RS485: Which Reader Interface Should You Specify?
Compare Wiegand, OSDP and RS485 reader interfaces: wiring, cable limits, AES-128 Secure Channel and steps for a compatible access-control migration.
125kHz vs 13.56MHz: Choosing Access Cards and Readers
125 kHz cards are cheap but easy to clone; 13.56 MHz cards add memory and, on DESFire-class chips, AES security. Compare range, chips, security and migration.
Wiegand 26-Bit Format Explained (with a Free Calculator)
Wiegand 26-bit is an even parity bit, 8-bit facility code, 16-bit card number and odd parity bit. Convert card numbers to hex and back with the calculator.
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Get pricing for the HF-210
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