25dBm 1-Port RAIN RFID Reader Module

img R3100C


  • Ultra compact size
  • High sensitivity
  • Surface mount device (SMD)
  • Serial interface
  • RAIN RFID (UHF EPC Class1 Gen2, ISO 18000-63) compliant
  • Multiregional support
  • Ultra compact size
  • Up to 25 dBm (316mW) output power
  • Serial interface (TTL Levels)
  • Low power consumption
  • Handheld devices
  • Multiregional label printers and applicators
  • Points of sale readers
  • Voice operated gloves

The Lepton3 (Model R3100C), an embedded reader of the easy2read© product line, is an ultra compact reader for low power, medium performance RAIN RFID applications.
With programmable output power from 10dBm to 25dBm, the reader can detect tags at more than 3 mt of distance (depending on antenna and tag dimensions).
Due to its low power consumption, the module is specifically designed to be easily integrated in battery powered devices.
The radio frequency core of the module is based on the Impinj E310 reader chip that permits to achieve fast reading speed and to be used in dense reader and dense tag environments for top-class rated performances.
The compactness of the device and the surface mount technology allow to embed the Lepton3 inside the new small form factor industrial handhelds, smartphone accessories and other compact form factor devices.
The Lepton3 complies with and can operate in both European and US regulatory environments and, thanks to its multiregional capability, it’s ideal for integration in devices requiring compliance to different geographical regions.
The Lepton3 is pin-to-pin compatible with the Impinj RS1000 and RS500 and with the CAEN RFID Hadronmini module making it a perfect replacement for these devices.

Frequency Range

865.600÷867.600 MHz (ETSI EN 302 208 v. 3.3.1)
902÷928 MHz (FCC part 15.247)

RF Power

Configurable from 10dBm to 25dBm (from 10mW to 316mW) conducted power

RX Sensitivity

-72dBm – 10%PER, assuming 20dB antenna RL @ 25dBm output

Antenna VSWR Requirement

< 2:1 for optimal performance

Antenna Connectors

50 Ohm mono-static RF port on a single pin

Frequency Tolerance

± 10 ppm over the entire temperature range

Number of Channels

4 channels (compliant to ETSI EN 302 208 v. 3.3.1)
50 hopping channels (compliant to FCC part 15.247)

Standard Compliance

EPC Class 1 Gen 2 – ISO18000-63


UART Serial Port:

  • Baudrate: from 9.6 to 921.6 kbps, default 921.6 kbps
  • Databits: 8
  • Stopbit: 1
  • Parity: none
  • Flow control: none

3.3 V I/O voltage level

I/O Interface

4 I/O lines 3.3 V level
Iout @ 8 mA max.

Power Supply

3.2 ÷ 5.25 V DC

Power Consumption

– 800 mA @ RF out = 25 dBm
– 5 mA in idle mode – Ready to receive commands


(L) 32 x (W) 29 x (H) 4.1 mm3
1.26 x 1.14 x 0.16 inches3

Package Type

32 pin surface mount module (SMT compatible)

Operating Temperature

-20°C to +70°C


5.4 g

R3100C Lepton3 Technical Information Manual
Easy Controller Software Technical Information Manual
R3100C Lepton3 Moisture Sensitive Level 3 (MSL 3)

Easy Controller Software Windows version


R3100C Lepton3 Data Sheet

REACH Declaration of Conformity

R3100C Lepton3 - R7100C Lepton7 Technical Drawings

CAEN RFID Products Catalog

R3100C - Lepton3 - 25dBm 1-Port RAIN RFID Reader Module
R1271C, R3100C, R7100C and R9100C - ETSI Dev Kit with antenna, interface, power supply and tags (reader not included)
R1271C, R3100C, R7100C and R9100C - FCC Dev Kit with antenna, interface, power supply and tags (reader not included)
Evaluation Board for R1271C, R3100C, R7100C and R9100C