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-120 ISO14443A/B UID Reader Module, TTL + USB, 50 × 10 mm
50 × 10 mm 13.56 MHz module that returns ISO14443 Type A and Type B card UIDs, with TTL UART, USB and a buzzer drive pin on one 7-pin header.
- Reads ISO/IEC 14443 Type A and Type B card UIDs at 13.56 MHz
- Covers MIFARE Classic 1K/4K, MIFARE Ultralight, NTAG, FM11RF08 and FM1208 CPU cards
- TTL UART and USB pins on the same 7-pin header, plus a buzzer drive pin
- Narrow 50 × 10 × 14 mm body (±1 mm tolerance)
- 5 V DC ±5% at under 200 mA; serial link at 115200 bit/s
- Frequency
- 13.56 MHz
- Protocols
- ISO/IEC 14443A/B (UID)
- Interface
- TTL UART + USB pins
- Read range
- > 20 mm
- Power
- 5 V DC ±5%, < 200 mA
- Dimensions
- 50 × 10 × 14 mm
Reply within 24 hours Tested before dispatch Worldwide shipping
ISO14443A/B UID Reader Module, TTL + USB, 50 × 10 mm: overview
The HF-120 is a narrow 13.56 MHz UID reader for products where board width is the tightest constraint: handheld terminals, tablets, smart locks, mobile devices and parcel or logistics equipment. At 50 × 10 × 14 mm it can run along the edge of a host PCB or fit inside a handle.
It reads unique IDs from ISO/IEC 14443 Type A and Type B cards, including MIFARE Classic 1K/4K (S50/S70), MIFARE Ultralight, NTAG, FM11RF08 and FM1208 CPU cards. Treat it as an identification module: it passes the card number to the host, and card-memory read/write is not part of the listed feature set.
What sets the HF-120 apart from our HF-130 is that one part number covers both host links. The 7-pin header brings out TTL UART (TX/RX) and USB (D+/D–) side by side, so a single stocked part can serve a microcontroller design and a USB-connected product. A BUZZ pin drives an external buzzer to confirm each read.
Integration notes
Supply 5 V DC ±5% with current under 200 mA. The serial link runs at 115200 bit/s. Tell us which host link you will use so we can confirm the firmware setting before shipment. Rated read distance is more than 20 mm and depends on the card and the enclosure, so test it in your housing. The module operates from –10 to +65 °C (storage –20 to +80 °C) at 15–90% RH, with a dimensional tolerance of ±1 mm.
More features
- Read distance above 20 mm; rated –10 to +65 °C
HF-120 specifications
RF & credentials
| Operating frequency | 13.56 MHz |
|---|---|
| Protocols | ISO/IEC 14443A, ISO/IEC 14443B |
| Supported cards (UID) | MIFARE Classic 1K (S50), MIFARE Classic 4K (S70), MIFARE Ultralight, NTAG, FM11RF08, FM1208 CPU card and other ISO/IEC 14443A/B cards |
| Data output | Card UID (serial number) |
| Read distance | > 20 mm (depends on card type and environment) |
Interfaces
| Host interfaces | TTL UART and USB (both on the 7-pin header) |
|---|---|
| Baud rate | 115200 bit/s |
| Feedback | Buzzer drive pin (BUZZ) |
Electrical
| Supply voltage | 5 V DC ±5% |
|---|---|
| Operating current | < 200 mA |
Mechanical & environment
| Dimensions | 50 × 10 × 14 mm (±1 mm) |
|---|---|
| Operating temperature | –10 to +65 °C |
| Storage temperature | –20 to +80 °C |
| Operating humidity | 15–90% RH |
Pin definition
| Pin | Signal | Function |
|---|---|---|
| 1 | 5V | Power supply +5 V |
| 2 | GND | Ground |
| 3 | BUZZ | Buzzer drive |
| 4 | DM | USB D– |
| 5 | DP | USB D+ |
| 6 | TX | UART transmit |
| 7 | RX | UART receive |
7-pin header shared by UART and USB lines.
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-120-T-U | 13.56 MHz ISO14443A/B UID module, TTL UART and USB on one 7-pin header, 5 V |
Where the HF-120 is used
- Operator log-on by badge on handheld scanners in parcel and logistics hubs
- Card reading built into the handle or edge of a smart door lock
- Tablet or kiosk peripherals that identify users by MIFARE or NTAG card number
- One stocked part for both a microcontroller product line and a USB-connected product line
UHF RFID for Warehouses, Dock Doors & Portals
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HF-120 FAQ
Does the HF-120 output TTL or USB?
One part number lists both, and the header has pins for each: pins 6 and 7 carry UART TX/RX, pins 4 and 5 carry USB D– and D+. Tell us which link you will use so we can confirm the firmware setting before shipment.
Can it write data to cards?
Card-memory read/write is not listed; the HF-120 returns card UIDs. For MIFARE sector read/write, look at the HF-160, HF-170 or HF-180 modules.
What read distance should I expect?
More than 20 mm, depending on the card type and the materials around the module.
How does the HF-120 differ from the HF-130 and HF-140?
All three share the 50 × 10 × 14 mm size, 5 V supply and ISO14443A/B UID reading. HF-120 carries TTL and USB on one part, HF-130 is ordered as a TTL or a USB build, and HF-140 is a single TTL/USB part whose host pinout we confirm with samples.
Before you buy
Related buyer guides
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Get pricing for the HF-120
Send your card type, interface and quantity. You get a quote, lead time and compatibility notes within 24 hours — samples available for most items.