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LOW FREQUENCY RFID125 KHz Reader with RS-485 Interface

This document describes the functionality of the contactless reader A-LRO4 125 KHz modules. It includes the functional and electrical specification. The A-LRO4 is a highly integrated reader with 125 KHz in built antenna. The A-LRO4 reader supports EMmarine Tag (125 KHz).The A-LRO4 internal transmitter part is able to drive a reader antenna designed to communicate with EM-marine (125 KHz) cards and transponders without additional active circuitry. A-LRO4 RFID Reader features an outstanding modulation and demodulation algorithm to serve effortless RF communication.
Various interfaces are Available:
 Serial UART (A-LRO1)
 RS-485 interface (A-LRO4)  RS-232 interface (A-LRO2)

Specifications

RFID Module Info
Features
Specifications
Commands
Ordering Info
  • Support EM-marine Tag (125 KHz)
  • Fast data transfer contactless communication
  • Secure-Encrypted Manchester Decoding
  • Typical operating distance up to 35mm depending on antenna size and tuning
  • In-built 125KHz Antenna
  • Support MODBUS ASCII/RTU communication protocol
  • Used timer for holding data in memory (customizable during configuration)
Country of OriginIndia
Operating Frequency125 KHz
Baud Rate Support9600
Reader DistanceUp to 30mm
InterfaceRS-485
Card/Tag SupportedEM-marine 125KHz
Operating Voltage9V – 36V
Operating Current40mA @12V – 24V
Operating Temperature0°C to 65°C
Storage Temperature0°C to 65°C
Relative Humidity5% – 95%
Tag DetectionBased on command
IndicationLED, Buzzer

Note 1: The following commands are specific to Avyanna Tech Pvt. Ltd (ATPL) RFID 125 KHz products (A-LRO4) and are not applicable to other products.

Note 2: Below mentioned commands are in hexadecimal format.
For more details please refer to the user manual.

Command/FCASCIIRTUDescription
0x42‘B’-Get factory code
0x44‘D’-Get Module ID
0x46‘F’0x03Read card/tag ID
0x47‘G’-Re-Read card/tag ID
MPNDescription
A-HRO4RFID 125 KHz based read only module with RS485 Interface