Serial Port Mini RS232 to TTL Converter Adaptor Module Board MAX3232
Review: 5 - "A masterpiece of literature" by John Doe, written onMay 4, 20020

Serial Port Mini RS232 to TTL Converter Adaptor Module Board MAX3232

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  • Product SKU: KG200
₹ 49 ₹ 79
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The "Mini RS232 to TTL Converter Module Board Adapter with Max3232" is a compact device that facilitates communication between devices or systems that use RS232 voltage levels and those that use TTL voltage levels. It's a versatile tool that allows you to interface microcontrollers (which typically use TTL) with RS232 devices (which use higher voltage levels).

Here are the key features and details of this module:

RS232 to TTL Conversion: This module serves as a bidirectional signal level converter, translating RS232 voltage levels (which can range from -12V to +12V) to TTL voltage levels (usually 0V to 5V).

Max3232 Chip: The Max3232 is a commonly used RS232 transceiver IC. It's known for its reliability and is widely used in various applications requiring RS232 communication.

Baud Rate: It supports data rates of up to 120 kbps, making it suitable for a range of communication speeds.

Voltage Compatibility: The module is compatible with voltage levels between 3V and 5V, which means it can work with both 3.3V and 5V microcontrollers or other TTL devices.

Serial Port: It typically includes pins for RS232 RX (receive), RS232 TX (transmit), VCC (power supply voltage), GND (ground), and TTL-level RX and TX pins for interfacing with your TTL device.

LED Indicators: Some modules have LEDs to indicate power and data transmission status.

Usage of the RS232 to TTL Converter Module:

Microcontroller Projects: You can use this module to connect a microcontroller (like an Arduino or Raspberry Pi) to devices that use RS232 communication, such as serial sensors, GPS modules, or legacy industrial equipment.

Debugging and Configuration: It's useful for debugging or configuring RS232 devices by connecting them to a computer or microcontroller for monitoring and control.

IoT and Embedded Systems: In IoT projects and embedded systems, you may encounter RS232 devices that need to communicate with modern TTL-level microcontrollers. This module bridges the voltage gap.

Technical Details 

  • Alarm set range (V): 2.7-3.8
  • Battery Input : 1S-8S Battery
  • Battery Type: LiPO/LiFe/Li-Ion/LiMn
  • Cell Voltage Display Range (V): 0.5-4.5
  • Height (mm): 1.5
  • Length (mm) : 15
  • Width (mm) : 8
  • Weight (gm) : 1


  • Input: 1S-8S Battery
  • Battery Type: Lipo/LiFe/Li-ion/LiMn
  • It has a Buzzer Alarm for low voltage indication.
  • Useful for measuring each cell voltage.
  • It has a mode button at the top for setting the desired voltage value.

Physical Attributes

  • Length * Width * Height  (mm) : 40 * 25 * 12 mm
  • Weight (gm) : 10

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    Package Includes

    • 1 x Serial Port Mini RS232 to TTL Converter Adaptor Module Board MAX3232

    Customer Reviews

    Based on 1 review
    Signal pads

    Great price for this product. I would not be able to purchase the parts to make this myself for the price!!!