RFID Reader (125Khz) - Serial TTL

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  • Part No :
  • RFID-1320
  • Availability:
  • In Stock
  • Shipping :
  • Same Day
  • Weight:
  • 0.1Kg
  • Made By:
  • rhydoLABZ
  • Mfr.Part.No:
  • RFID-1320
  • Quality Rank:
  • 100/100
Rs 950
(Tax Excl.)
Quantity :
The rhydoLABZ RFID reader reads EM4100 family transponder tags that are brought in proximity to the reader and output the unique tag identification number through serial port @9600 bps. The reader output 12 byte including one start, stop byte and 10 unique data byte.The start byte and stop byte are used to easily identify that a correct string has been received from the reader (they correspond to a line feed and carriage return characters, respectively). The middle ten bytes are the actual tag's unique ID. Vertical and horizontal parity checking has been done in card reading algorithm to ensure data integrity.One status LED is provided to indicate card detection. The normal detection range is 10-15CM for Card Type TAGs.The RFID Reader (as well as the RFID tags sold by rhydoLABZ) uses the EM4102 protocol. Any other tags that also use the EM4102 protocol can be used with the rhydoLABZ RFID reader.
All communication is 8 data bits, no parity, 1 stop bit, non-inverted, least significant bit first (8N1). The baud rate is configured for 9600bps, a standard communications speed supported by most any microprocessor or PC, and cannot be changed. The rhydoLABZ RFID Reader Module initiates all communication. The rhydoLABZ RFID Reader Module can connect directly to any TTL-compatible UART or to an RS232-compatible interface by using an external level shifter.
RFID (radio frequency identification) systems use data strings stored inside RFID tags or transponders) to uniquely identify people or objects when they are scanned by an RFID reader. These types of systems are found in many applications such as passport protection, animal identification, inventory control systems, and secure access control systems,robotics, navigation, inventory tracking, payment systems, and car immobilization. Because passive tags require a strong RF field to operate, their effective range is limited to an area in close proximity to the RFID reader. The distance over which the RFID tag is usable is affected by such things as the tag shape and size, materials being used in the area near the reader, and the orientation of the reader and tag in respect to each other and in their operating environment. The smaller a tag, the closer it must be to the reader to operate.  Each transponder tag contains a unique identifier (one of  1,099,511,627,776, possible combinations) that is read by the RFID Reader Module and transmitted to the host via a simple serial interface.

There are a variety of transponder tags that come in different packages. Each tag has a specific range that is within 10% of the given distance for each type of tag. The reason for the 10% is due to environmental conditions and RFID modules.

Product Features:
  • Low-cost method for reading passive RFID EM4100 family transponder tags
  • Reading Distance 10-15CM of the reader (Depend card shape)
  • 125kHz read frequency
  • 9600 baud serial interface
  • Enable input allows module to be enabled/disabled externally 
  • Standard 2.54mm Pitch Bergstrip connector
  • Bread Board compatible
  • Low power Requirement 5V@ 120mA
  • Small Size
  • Built in Antenna
  • No components at PCB bottom side ( easy to stick to any surface like wood,glass ect.)
  • Designed by RHYDO
  • Status LED for card detection
  • On-Board Power LED
Key Specifications:
  • Power requirements: 4.5 to 5.5 VDC
  • Current Requirement: <120mA
  • Communication: Serial at 9600 baud (8N1)
  • Dimensions: 63mm x 98mm x 5 mm
  • Operating temp range: -40 to +185 °F (-40 to +85 °C)
Package Includes:   
  • 1 X RFID Reader (125Khz) – Serial TTL
  • 1 X Berg Strip-Straight (1x5)
  • 1 X Berg Strip-Right angled (1x5)


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Perfect Design indeed.Suits perfect.

By Mrunal Ahirrao from Maharashtra, India on July 12, 2016
Very nice and easy to use product. Very small layout so can fit easily in enclosure. I was searching for something like this.
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By Tech Support from N/A on December 21, 2015
Hi Brijesh,

As per the driver specification, UNO can only drain a maximum of 100mA. On the other hand, UNO & RFID reader together consumes about 130mA as a whole. From this you can understand that insufficient current is the reason why the module power goes off when connected together and powered via USB. For this particular application, using a power supply adapter(for powering) along with the USB(for comm.) will be a great choice.
2 of 4 people found this review helpful
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By Brijesh Singh from N/A on December 15, 2015
It's not working with Arduino. Whenever I connect arduino USB to PC, the modules power goes off.
It is only working with USB-TTL converter.
My Arduino connections are as follows:

Arduino Rx --_ Module Tx
Arduino +5 --_ Module 5V
Arduino GND --_ Module GND
Also tried 0.1 uF cap b/w GND and Power pin of Arduino

If I uses external 5v power for module makes GND common for all Arduino,Module,External Power source, Modules's power LED keeps on glowing. But at same time when I connect my arduino to
PC, the modules power goes off.

Please help.
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RFID Reader (125Khz) - Serial TTL