U620-M UHF integrated RFID reader, front view of the light gray 240 mm radome

U620-M UHF Integrated RFID Reader, 8 dBi, Wiegand 26/34, RS232/RS485

Q: What is the difference between the U620-M and the U610-M?

Both are rated for 0–5 m (up to 8 m in high-power mode). The U620-M has an 8 dBi antenna in a 240 × 240 × 50 mm, 1.2 kg housing and runs on DC 12 V. The U610-M has a 7 dBi antenna in a smaller 215 mm, 0.8 kg housing and adds Wiegand 98.

Q: Which Wiegand formats does the U620-M output?

Wiegand 26 and Wiegand 34. If your controller expects another length, send its input format with your RFQ and we confirm what the reader can send.

Q: Does the U620-N keep the RS485 port?

Plan on Wiegand 26/34, RS232, TCP/IP and USB for the U620-N. RS485 on the E-type build is confirmed at order, so state it in your RFQ if you need both RS485 and Ethernet.

Q: Can the U620-M read a tag through a car windshield?

Usually yes, with an EPC Gen2 windshield tag inside the 0–5 m rated range. Some windshields have a metallic coating that blocks UHF, so fit the tag in the uncoated area and test on a real vehicle before rollout.

The U620-M is an integrated UHF RFID reader with an 8 dBi antenna in a 240 × 240 mm panel, for parking entries, loading bays and staff gates that report to a Wiegand controller or PC software. It reads EPC Gen2 tags at 0–5 m (up to 8 m in high-power mode) over Wiegand 26/34, RS232/RS485 or USB.

Frequency: 902–928 MHz or 865–868 MHz, specified at order; other bands on request
Cards / tags: ISO 18000-6C / EPC Gen2 passive UHF tags (read and write)
Interface: Wiegand, RS232, RS485, USB
Output: Wiegand 26 / 34
Read range: 0–5 m; up to 8 m in high-power mode (depends on tag and site)

Available versions

U620-MN-type: Wiegand 26/34, RS232/RS485, USB
U620-NE-type: adds TCP/IP Ethernet (Wiegand 26/34, RS232, TCP/IP, USB; RS485 confirmed at order)

Request a quote for U620-M Order a sample Datasheet (PDF)

✓ Sample units for evaluation
✓ Output format confirmed for your software
✓ Private label & OEM options
✓ Reply within 1 business day

Why integrators choose the U620-M

8 dBi antenna, 0–5 m rated — the same rated range as the 7 dBi model, with more antenna gain for tags that are hard to read at that distance.
Two interface builds — U620-M with Wiegand 26/34, RS232, RS485 and USB, or U620-N with TCP/IP Ethernet added.
Fixed-frequency option — run on a fixed channel or a software-programmed frequency plan to suit the site and local rules.
RF power 0–30 dBm — trim the field in software so the reader covers its own lane and not the next one.
Triggered or continuous — one trigger input starts reading on an external signal; otherwise the reader scans continuously.
Mid-size panel — 240 × 240 × 50 mm and 1.2 kg, between the compact U610-M and the 257 mm U630-M, for pole or wall mounting on a bracket.

Why pick the 8 dBi panel

The U620-M and the U610-M share a 0–5 m rated range. The difference is the antenna. A higher-gain antenna concentrates the RF field into a narrower beam, which gives more signal margin on the boresight and less spill to the sides. That extra margin can help with tags that are hard to read at a given distance, such as windshield tags behind coated glass or tags that pass the panel at an angle.

It suits parking entry lanes read at 3–5 m, loading bay doors and staff vehicle gates. For a longer approach, step up to the U630-M.

Ordering the right build

U620-M (N-type): Wiegand 26/34, RS232, RS485 and USB. Choose it when the reader feeds an access or parking controller, or a PC over a serial line.
U620-N (E-type): Wiegand 26/34, RS232, TCP/IP and USB. Choose it when the reader reports to a server on the site LAN. If you need RS485 and Ethernet on the same reader, say so in your RFQ and we confirm it before you order.
Band: 902–928 MHz or 865–868 MHz, set per order. Check your country in our UHF frequency bands guide.

Power and cabling

Plan a DC 12 V supply rated at 3 A. Run Wiegand to the controller's reader input, or RS485 when the PC is far from the gate, because RS485 handles long cable runs better than RS232. Our interface guide compares cable distances and wiring.

U620-M specifications

General
Model	U620-M (N-type) / U620-N (E-type with TCP/IP)
Product type	UHF RFID reader with integrated antenna
Frequency	902–928 MHz or 865–868 MHz, specified at order; other bands on request
Air interface	ISO 18000-6C, EPC Class 1 Gen 2
Antenna	Built-in, 8 dBi
RF output power	0–30 dBm, software adjustable
Frequency mode	Fixed frequency or software-programmed

Tags & reading
Supported tags	ISO 18000-6C / EPC Gen2 passive UHF tags (read and write)
Read range	0–5 m; up to 8 m in high-power mode (depends on tag and site)
Read speed	< 6 ms average per 64-bit single-tag read
Read mode	Continuous (active) or triggered (passive), set by software
Trigger input	1
Indicator	Buzzer

Interface & output
Interfaces, U620-M	Wiegand, RS232, RS485, USB
Interfaces, U620-N	Wiegand, RS232, TCP/IP, USB (RS485 on this build confirmed at order)
Wiegand formats	Wiegand 26 / 34
Serial / USB data	Format set in the configuration software
SDK and software	Sample code in C#, Visual C++, VB, Java and Delphi; test demo; tag read/write and issuing demo

Physical & environment
Dimensions	240 × 240 × 50 mm
Weight	1.2 kg (2.2 kg packed)
Power supply	DC 12 V, 3 A
Operating temperature	-20 °C to +65 °C
Storage temperature	-45 °C to +95 °C
Mounting	Pole or wall bracket
Color	Light gray

Specifications of U620-M as supplied for the standard version. Read range depends on the card or tag, mounting surface and environment — we can test your own cards before you order.

Download the U620-M datasheet (PDF, A4)

Card, tag and system compatibility

Works with

✓ISO 18000-6C / EPC Gen2 passive UHF tags: windshield tags, cards, labels and hard tags
✓Access and parking controllers with a Wiegand 26 or 34 input
✓PC software over RS232, RS485 or USB, using the SDK
✓Server software over TCP/IP Ethernet (U620-N)
✓902–928 MHz or 865–868 MHz operation, ordered per band

Not designed for

✕125 kHz or 13.56 MHz access cards — see access control readers
✕Active (battery-powered) tags
✕Writing tags over Wiegand — use the SDK or demo software over serial, USB or TCP/IP
✕Controllers that expect Wiegand 98 — confirm before ordering
✕Lanes that need reads beyond 8 m — see the U640-M

Card not listed? Send us the card type or a photo and we will confirm compatibility before you buy.

Integration in 4 steps

1
Mount the panel on a pole or wall bracket beside the lane, angled toward the point where the tag passes.
2
Connect a DC 12 V, 3 A supply, then Wiegand D0/D1 to the controller, RS485 or RS232 to the PC, or Ethernet on the U620-N.
3
In the demo software, set RF power, fixed-frequency or programmed mode, and continuous or triggered reading; wire the trigger input if a loop detector or photo-beam starts each read.
4
Drive a tagged vehicle or cart through the lane, adjust power until only the intended lane is read, then connect your software through the SDK.

OEM / ODM options for U620-M

◆902–928 MHz or 865–868 MHz build; other UHF bands on request
◆N-type U620-M or E-type U620-N with TCP/IP Ethernet
◆RF power, frequency mode and read mode pre-set to your site values before shipment, on request
◆Cable length and connector (DB9 or open wires) on request
◆Private label on the product label and carton, on request

How OEM/ODM projects work →

Typical applications

U620-M FAQ

What is the difference between the U620-M and the U610-M?

Both are rated for 0–5 m (up to 8 m in high-power mode). The U620-M has an 8 dBi antenna in a 240 × 240 × 50 mm, 1.2 kg housing and runs on DC 12 V. The U610-M has a 7 dBi antenna in a smaller 215 mm, 0.8 kg housing and adds Wiegand 98.

Which Wiegand formats does the U620-M output?