China maker 13.56mhz usb card reader writer RS232 serial port rfid card reader NFC card reader/writer

$7.99 - $12.88
Min. Order
1 Piece
Company Information

Shenzhen Sycreader RFID Technology Co., Ltd.

CN Manufacturer, Trading Company
Response Time
Response Rate:
US$ 40,000+
3 Years Paid Supplier Gold Supplier Onsite Check Trade Assurance
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Quick Details

Port: Shenzhen
Payment Terms: L/C,D/A,D/P,T/T,Western Union,MoneyGram
Supply Ability: 100000 Piece/Pieces per Month
Place of Origin: Guangdong China
Brand Name: SYC
Model Number: R21C
Frequency: 13.56KHZ
Support: MF/Ntag203/213 and compatible card
Read distance: 0-100mm
Power Supply: +5V DC
Material: ABS
Dimension: 104mm*68mm*10mm
Interface: RS232 serial port
Net weight: 140g
Color: Black
Delivery time: 1-3 days
Delivery Detail: 1-3 business days
Packaging Detail: 1pc in a box, 20pcs in a carton

China maker 13.56mhz usb card reader writer RS232 serial port rfid card reader NFC card reader/writer




 Specifications of R21C card reader: 





Support cards

MF\S50\S70\NTAG203\NTAG213 etc.

Output format

10 digit dec(Defoult output format)

(Allow user to customize the output format)

Bit rate








Power Supply


Read Distance

0mm-100mm(related to the card & the environment)

Operating Temperature

-10℃ ~ +70℃

Storage Temperature

-20℃ ~ +80℃

Working humidity


Read time


Read interval



About 155G

Cable length


Material of reader


Operating System

Win XP\Win CE\Win 7\Win 10\LIUNX\Vista\Android


Double Color LED (Red & Green) and Buzzer

 (“Red” means standby, “Green” means read success)



RS232 Communication

9600 bps, none parity, 8 data bits, 1 stop bit

Data Format

STXlengthCard typeSNR[0.N]BCCETX


Example:  02 0A 01 06 00 8E 6D 5D B0 03

STX: 02

Length: 0A, 9 bytes

CardType: 01, MF

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



1. Do not install the reader on the magnetic objects and metal objects, they will seriously affect the RF signal.

2. If after reading, the tag is still in the induction zone, the RF reader will not send data and without any hints.

Common problems

1. Operation without feedback: Please check whether the interface plugged in, whether the tag is a valid or whether another RF tag is within the reading range.

2. Data error: Please check Whether the mouse is moved, whether the reader is in a critical state and whether the cable length is too long.


Pictures of R21C card reader: 







Company Information

Shenzhen Sycreader RFID Technology Co., Ltd was established in 2008,has focused on RFID Industry about 10 years.Our main products have RFID 125KHz RFID Card Reader,134.2KHz RFID Reader,RFID Reader 13.56MHz,RFID UHF Reader,RFID Handheld Reader,RFID antenna,Tags RFID and RFID solution etc.

After 10 years of development,we have formed a complete set of production and marketing mode;the professional R&D team and Sale team.The products which were produced by SYCreader with High quality and competitive price,has won a good reputation.

Look forward to establish friendly and mutually beneficial partnership with you.



1. Are you Factory?

Yes,we are professional RFID products manufacturer,and we have focused on RFID industry about 10 years.


2. What is your main products?

Our products mainly include RFID reader,RFID tag,RFID module and antennas,RFID handheld reader,include 125KHz , 13.56MHz and UHF types etc.


3. What is your advantages?

We have rich experience in RFID industry,and we have professional R&D team to provide after sale technical support online,can also provide customized service.


4. How to place order to sycreader?

You can place order via Alibaba trade assurance order online.We also accept payment by TT,Western Union or Paypal etc.


 5.Do you provide OEM service?

 Yes,we do.We have professional engineer team,can provide you more RFID solutions according to your demands.