RS232 to TTL Serial Interface Module
RS232 to TTL Serial Interface Module
The RS232 to TTL Serial Interface Module converts standard RS232 voltage levels (±12V) to 5V TTL logic, enabling communication between legacy serial devices and modern microcontrollers. Ideal for engineers, students, and hobbyists integrating older equipment with Arduino or ESP32 projects.
Specifications
- Logic level: 5V TTL
- Interface: RS232 (DB9 female connector) to TTL (4-pin header: TX, RX, VCC, GND)
- Protocol: Asynchronous serial (UART)
- Baud rate: Up to 115200 bps
- Dimensions: Approximately 45mm x 25mm
- Power supply: 5V DC from host microcontroller
Compatible with
- Arduino (Uno, Mega, Nano, etc.)
- ESP32 and ESP8266
- Raspberry Pi (via GPIO UART)
- STM32 boards
- Any 5V TTL serial device
What you can build with it
- Connect a vintage RS232 barcode scanner to an Arduino for inventory tracking
- Interface an old industrial PLC or CNC machine with a Raspberry Pi for data logging
- Build a serial-to-USB bridge for debugging legacy equipment using a TTL adapter
Built and Backed by Compoden
Every RS232 to TTL module from Compoden includes access to our AI build companion—delivered via QR code, email, or WhatsApp—that guides you through wiring and programming this part into a working project. With 10 years of experience supplying makers and institutions across India, we ensure reliable components for your builds. Pay your way: UPI, cards, or Cash on Delivery, anywhere in India.
What is the difference between RS232 and TTL?
RS232 uses higher voltage levels (±12V) for longer cable runs, while TTL uses 0-5V logic common in microcontrollers. This module converts between the two, allowing devices with different voltage standards to communicate.
What payment options are available for the RS232 to TTL Serial Interface Module?
You can pay using UPI, credit/debit cards, or Cash on Delivery (COD). All options are available across India.
How do I connect this module to my Arduino?
Connect the module's VCC to Arduino 5V, GND to GND, TX to Arduino RX (pin 0), and RX to Arduino TX (pin 1). Use the Serial Monitor to send and receive data at matching baud rates.
How long does delivery take?
We ship the RS232 to TTL Serial Interface Module across India including Delhi, Mumbai, Bangalore, Hyderabad, Chennai, and Pune. Typical delivery is 3-7 business days.
Ask Soldr above what you can build with this — it knows every Compoden kit this part appears in.
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items