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RFID Card, Vending Machine Parts

3V-5V RFID YHY502CG Reader Writer Module UART Interface

SKU: YHY502CG

₹ + 18% GST

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Availability: Available on backorder

Estimated Delivery: Estimated delivery in 2 to 4 weeks

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YHY502CG 13.56MHz Contactless RFID Reader / Writer Module

ISO14443 Type A | MIFARE Supported | Integrated Antenna | UART (TTL) Interface

The YHY502CG (HY502 series) is a complete, wide-voltage (2.7V–5.5V) 13.56MHz RFID read/write module featuring an onboard transceiver antenna and streamlined single-command execution. Built on high-performance 600nm CMOS ASIC technology, it supports ISO14443 Type A and MIFARE encryption protocols with automated card detection, hardware interrupt indication (SIG pin / LED), and simple UART interface integration for access control, automated metering, and smart terminal applications.

Standard / Protocol
ISO14443 Type A / MIFARE
Operating Voltage
2.7V to 5.5V DC (3V–5V)
Host Interface
UART (TTL/RS232) @ 19200bps
RF Antenna Type
Built-in Transceiver Antenna
Card Detection
Auto-Find / SIG Pin Flag
Transfer Speed
Up to 106 kbps Contactless

Product Model YHY502CG (HY502 Series)
Device Classification Contactless 13.56MHz RFID Reader / Writer Module with Integrated Antenna
Card Compatibility ISO14443A, MIFARE Classic 1K (S50), MIFARE Classic 4K (S70), MIFARE Ultralight, MIFARE Pro, FM11RF08, and compatible transponders
Security & Encryption Hardware-supported standard MIFARE encryption algorithms for secure contactless transactions
Card Presence Indication Automatic card discovery: onboard RED LED illuminates and SIG pin transitions from High (‘1’) to Low (‘0’) upon entering the RF field
Communication Interface UART Interface (Dual logic levels: TTL / CMOS compatible); default baud rate: 19200 bps
Operational Features Single-command read/write execution (no request/select polling required), internal watchdog timer, unique factory serial number per unit
Target Applications Water, electricity, and gas utility meters, vending machines, access control systems, elevator security, e-money/cashless payment terminals, public telephone billing, automated data collection
SKU: YHY502CG Categories: ,

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3V-5V RFID YHY502CG Reader Writer Module UART Interface SKU: YHY502CG