UHF RFID Reader Modules

Building a prototype on an Arduino, ESP32 or Raspberry Pi? See RFID for Arduino, ESP32 and Raspberry Pi for the modules, tags and wiring.

Choosing a UHF RFID reader module

A reader module is the RFID engine without the box: a bare PCB with the reader chip, antenna ports and a processor, made to sit inside an enclosure you design. It suits OEMs and system integrators who already build kiosks, barrier controllers, vending machines or automation panels and want UHF reading inside them. The three ICL boards run Linux on an ARM9 CPU, are designed for continuous 24 × 365 operation and scan automatically over a COM port or the network; the ID-UM01 is a smaller UART module with its antenna built in.

How to choose: ports, chip and connectivity

• Ports. Each port drives one external antenna, and each antenna is one read zone. Count the doors, lanes or stations your product must cover, and allow a spare port if a wide opening may need a second antenna.
• Reader chip. The ICL1P uses the Impinj E3500. The ICL4P and ICL8 use the Impinj E710 and are rated for up to 1,000 reads per second against 400 on the ICL1P, which matters when many tags pass at once.
• Network and power. Wi-Fi is built into all three. PoE on the ICL4P and ICL8 lets one cable carry power and data to a ceiling or gate panel. Bluetooth and 4G are optional.
• Software. SDKs are available for all common programming languages, so tag reads can go straight into your own application.

Module or finished reader?

Choose a module when you control the enclosure, power supply and cabling, and want the reader hidden inside your product. For a housed reader that goes straight onto a wall or pole, a finished unit such as the IHZ4 4-port fixed reader or the IF9A integrated reader with its built-in 9 dBi antenna is quicker to deploy. Both of those models are BIS and WPC approved, which some tenders ask for.

What to order with a module

• Antennas and coax. Plan one UHF antenna per port in use, from the RFID antenna range, for example the 9 dBi circular antenna RUCA9 for gates and lanes. Keep coax runs short and of similar length across ports.
• Tags. Match the tag to what you are tagging: UHF labels for cartons and documents, on-metal tags for equipment and UHF cards for people and vehicles.
• Enclosure and mounting. Mount the board on standoffs, keep the RF section clear of switching power supplies, and route antenna cables away from power and PoE wiring.

Typical OEM builds

Integrators use these boards for automatic attendance at school and factory turnstiles, personnel tracking in plants, library security gates, toll plaza and parking automation, hospital and laundry trolley checkpoints, event gates and logistics dock lines. For antenna gain, polarisation and read-zone planning, see the RFID antenna guide.