Product Description

R21 series it's RFID smart credit card reader with a standard serial port, reader distance up to 80mm, it’s not only simple aspect, but also stable and reliable data. Widely used for RFID Radio Frequency Identification system and project, Such as Automated parking management system, Personal identification, Access controller, Production Access control, etc.

Product Info

Minorder 1

Product Detail

Active RFID reader name:
USB LF RFID 125khz Desktop Smart Active RFID Reader for Door Access Card

Ⅱ Instructions for use

Method of installation and use
Connect with computer through a serial cable directly. When the buzzer sounded, reader into the self-inspection. And the same time, LED turn into red means standby.
Open the output of computer software,such as Serial debugging assistant.
Put tag on the top of reader, the software will output a data(card number) of the tag. When reading the tag, LED light change from red to green.
Detecting device is connected
Open the Device Manager of computer, If appears Device and “COM” port is OK that means Reader has successfully into computer.
Ⅲ Communication Format
RS232 Communication
9600 bps, none parity, 8 data bits, 1 stop bit
Data Format
STX Length CardType SNR [0..N] BCC ETX

The following table describes the packet fields
Field Length Description
STX 1 0x02, the starting of a data packet.
Length 1 Length of the data bytes in the packet (except STX).
CardType 1 0x01: Mifare; 0x02: EM4100
SNR [0..N] 5 SNR[0]:batch number, SNR[1..4]:serial numbers
BCC 1 BCC = Length xor CardType xor SNR[0..N]
STX 1 0x03, the ending of a data packet.

Example:  02 0A 02 06 00 8E 6D 5D B0 03 
STX: 02
Length: 0A, 9 bytes
CardType: 02, EM
SNR: 06 00 8E 6D 5D, 06 = batch number, 00 8E 6D 5D = 0009334109 (DEC)
BCC: B0,  B0 = 0A xor 02 xor 06 xor 00 xor 8E xor 6D xor 5D
EXT: 03

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