This is the 3V variant of the 3V-5V RFID YHY502CG Reader Writer Module UART Interface in RFID card, Tags & Reader. Available at ₹1,345.20 (₹1,140.00 + GST) with free shipping across India.
Looking for Yhy502cg Module? 3V-5V RFID YHY502CG Reader Writer Module UART Interface is available at Zbotic with fast shipping across India.
3V-5V RFID YHY502CG Reader Writer Module UART Interface
This contactless 3V-5V RFID YHY502CG Reader Writer UART Interface module is designed for an easy reader adaptation to a host to use this device for test and application purpose. There is need only one command to finish one action, such as read or write card data. It needs no request or selection. The module will do it for you automatically. What you need is just send one command to the module. Then it will send back what you want. Anything is just so simple and so easy. Also, if there is any card go into the rf field, the red led on the module will light and the SIG pin will change from “1” to “0” to indicate the event.
This HY502 series of RFID reader/writer modules are based on non-contact card reader ASCI chip compatible with ISO14443 standard. It uses 600nm CMOS EEPROM technology, supports ISO14443 type A protocol, and also supports the MIFARE standard encryption algorithm. The chipset integrates analogue modulation and demodulation circuits only require minimal peripheral circuits to function. The module supports UART interface. The digital circuits have dual working voltages mode, TTL and CMOS. The HY502 module is targeting water, electricity, gas meters, vending machines, access control, elevators, drinking fountains, telephone billing system or other identification card reader system applications.
Users can simply select the desired interfaces to harvest the full operation of the system and do not need to struggle with the complicated radio base station design. HY502 series supports Mifare One S50, S70, Ultra Light & Mifare Pro, FM11RF08 and other compatible cards. It can be set to automatically find cards, by default, to automatically find cards. HY502 series are low-power modules, wide-voltage 2.7 ~ 5.5V, uses an integrated module with an embedded antenna and can significantly reduce PCB size.
Specifications:
- Complete Read/Write module with the built-in transceiver antenna
- Auto checks for the presence of a tag
- Supports ISO14443A /MIFARE, MIFARE Classic 1k, MIFARE Classic 4k
- TTL RS232 Interface, baud rate19200bps
- Fast data transfer ¬Contact-less communication up to 106KHz
- Secure Encrypted contact-less communication
- Ideal for e-money, secure access and fast data collection applications
- Watchdog timer
- 1 LED indicator
- Unique serial number on each device
Package Includes
1 x 3V-5V RFID YHY502CG Reader Writer Module UART Interface
3V-5V RFID YHY502CG Reader Writer Module UART Interface Overview
The 3V-5V RFID YHY502CG Reader Writer Module is a contactless ISO14443-A card reader/writer with a UART interface, designed for seamless integration into embedded systems. It supports both standard reading and encrypted MIFARE operations over a simple serial link.
Key Features of 3V-5V RFID YHY502CG Reader Writer Module UART Interface
- Operating voltage 3 V–5 V for direct MCU compatibility
- TTL-level UART interface for easy serial communication
- Supports ISO14443 Type A protocol and MIFARE standard encryption
- Built on 600 nm CMOS EEPROM technology with non-contact ASCI chip
- Automatic card detection via onboard red LED and SIG pin toggle
- Fast shipping and genuine product assurance from Zbotic
Applications and Use Cases
- Access control and door entry systems with card authentication
- Attendance tracking solutions in schools, offices, and events
- Inventory management and product authentication workflows
- Integration into Arduino, Raspberry Pi, and other prototyping projects
- Contactless payment or ticketing kiosk prototypes
How to Use 3V-5V RFID YHY502CG Reader Writer Module UART Interface
Connect VCC (3–5 V), GND, TX and RX pins to your host microcontroller’s UART port, then power on the module. Send the single-byte or multi-byte read/write command over serial; the module will automatically detect and select any ISO14443-A card in its RF field, light the red LED and toggle the SIG pin, and return the requested data or acknowledge a write operation.
Why Buy from Zbotic?
- Genuine Products: All items sourced from authorized distributors
- Fast Shipping: Orders ship within 24 hours with tracking (non backordered products)
- Free Shipping: Free delivery on qualifying orders
- COD Available: Cash on Delivery, UPI, cards, net banking
- Technical Support: Expert help for setup and troubleshooting
- Easy Returns: Hassle-free replacement for defective products
Frequently Asked Questions
Which RFID cards are compatible with the YHY502CG module?
The module supports ISO14443 Type A contactless cards, including standard MIFARE Classic and other Type A cards using the MIFARE encryption algorithm.
What voltage and interface should I use to connect this module?
Power the module with a DC supply between 3 V and 5 V, connect GND accordingly, and use the TTL-level UART TX/RX pins to communicate with your host microcontroller or serial adapter.
How do I detect when a card is in range?
When a card enters the RF field, the onboard red LED illuminates and the SIG output pin toggles logic level automatically, indicating presence before any read/write command.
Technical Specifications
| Operating Voltage | 3V |
|---|---|
| Interface / Protocol | UART |
| SKU | AI1110 |
| Weight | 0.005 kg |
| Availability | Out of Stock |
Applications & Use Cases
The 3V-5V RFID YHY502CG Reader Writer Module UART Interface is a versatile rfid card, tags & reader used across a wide range of applications including electronics projects, DIY builds, prototyping, and educational experiments.
Common use cases:
- Integrating into a custom electronics project
- Learning and experimenting with circuits
- Replacing or upgrading components in existing setups
This product is ideal for electronics enthusiasts, engineers, and students.
Technical Tip: Always verify voltage and current requirements before connecting to your circuit. Check datasheets for detailed specifications and pin configurations.
Shipping & Delivery
- Free shipping on orders above ₹999 across India
- Dispatched within 1-3 business days
- Expected delivery: 3-7 business days depending on location
- Secure packaging to ensure safe transit of electronic components
Chitra Shetty (verified owner) –
Nice 3V-5V RFID YHY502CG Reader Writer Module. Works well with the library examples. Good for prototyping.
Himanshu Vyas (verified owner) –
This 3V-5V RFID YHY502CG Reader Writer Module works perfectly for my wireless project. Easy to pair and use.
Mayank Chopra –
Nice 3V-5V RFID YHY502CG Reader Writer Module. Works well with the library examples. Good for prototyping.
Tushar Kamath (verified owner) –
This 3V-5V RFID YHY502CG Reader Writer Module is reliable and consistent. Using it for long-range data transfer.
Krishna Naidu (verified owner) –
Outstanding! This 3V-5V RFID YHY502CG Reader Writer Module made my IoT mesh network project possible. Highly recommended.
Sanjay Dave (verified owner) –
Nice 3V-5V RFID YHY502CG Reader Writer Module. Works well with the library examples. Good for prototyping.
Gaurav Reddy (verified owner) –
Perfect 3V-5V RFID YHY502CG Reader Writer Module for wireless communication. Range exceeds the specifications.
Shreyas Kulkarni (verified owner) –
Good 3V-5V RFID YHY502CG Reader Writer Module. Range is decent. Antenna orientation matters for best performance.
Kartik Das (verified owner) –
Perfect 3V-5V RFID YHY502CG Reader Writer Module for wireless communication. Range exceeds the specifications.
Aditi Verma –
Excellent 3V-5V RFID YHY502CG Reader Writer Module! Range is impressive and connection is stable.
Vidya Rawat (verified owner) –
Very satisfied with this 3V-5V RFID YHY502CG Reader Writer Module. Low power consumption makes it ideal for battery projects.
Raj Agarwal (verified owner) –
Very satisfied with this 3V-5V RFID YHY502CG Reader Writer Module. Low power consumption makes it ideal for battery projects.
Aanya Garg (verified owner) –
This 3V-5V RFID YHY502CG Reader Writer Module is reliable and consistent. Using it for long-range data transfer.
Ishaan Bajaj (verified owner) –
This 3V-5V RFID YHY502CG Reader Writer Module works perfectly for my wireless project. Easy to pair and use.
Om Tandon (verified owner) –
Excellent 3V-5V RFID YHY502CG Reader Writer Module! Range is impressive and connection is stable.
Dhruv Shah (verified owner) –
This 3V-5V RFID YHY502CG Reader Writer Module is reliable and consistent. Using it for long-range data transfer.
Tejas Negi (verified owner) –
Average 3V-5V RFID YHY502CG Reader Writer Module. Works but range is less than advertised in my environment.
Deepak Krishnan –
Average 3V-5V RFID YHY502CG Reader Writer Module. Works but range is less than advertised in my environment.
Riya Ghosh –
Perfect 3V-5V RFID YHY502CG Reader Writer Module for wireless communication. Range exceeds the specifications.
Zara Kumar (verified owner) –
Superb 3V-5V RFID YHY502CG Reader Writer Module! Using it in my asset tracking project. GPS accuracy is great.
Chetan Desai (verified owner) –
Perfect 3V-5V RFID YHY502CG Reader Writer Module for wireless communication. Range exceeds the specifications.
Ankur Saxena –
Superb 3V-5V RFID YHY502CG Reader Writer Module! Using it in my asset tracking project. GPS accuracy is great.
Varun Bisht (verified owner) –
Outstanding! This 3V-5V RFID YHY502CG Reader Writer Module made my IoT mesh network project possible. Highly recommended.
Paras Jain (verified owner) –
Decent 3V-5V RFID YHY502CG Reader Writer Module. Connection is stable indoors. Outdoor range slightly less than expected.
Sumit Trivedi (verified owner) –
Great quality 3V-5V RFID YHY502CG Reader Writer Module. Data transfer is reliable with no packet loss.
Vansh Choudhury (verified owner) –
Superb 3V-5V RFID YHY502CG Reader Writer Module! Using it in my asset tracking project. GPS accuracy is great.
Dev Thakur (verified owner) –
Nice 3V-5V RFID YHY502CG Reader Writer Module. Works well with the library examples. Good for prototyping.
Nikhil Nayak (verified owner) –
Great quality 3V-5V RFID YHY502CG Reader Writer Module. Data transfer is reliable with no packet loss.
Zara Banerjee –
Great quality 3V-5V RFID YHY502CG Reader Writer Module. Data transfer is reliable with no packet loss.
Kabir Krishnan –
Good 3V-5V RFID YHY502CG Reader Writer Module. Range is decent. Antenna orientation matters for best performance.
Akshat Choudhury (verified owner) –
Superb 3V-5V RFID YHY502CG Reader Writer Module! Using it in my asset tracking project. GPS accuracy is great.
Tarun Sen (verified owner) –
This 3V-5V RFID YHY502CG Reader Writer Module works perfectly for my wireless project. Easy to pair and use.
Sanjay Arora (verified owner) –
Nice 3V-5V RFID YHY502CG Reader Writer Module. Works well with the library examples. Good for prototyping.