Uses：
The TTL serial port communicates with the RS232 level device.
Serial expansion of the device.
RS232 port communication with computer PC.
Can be used for GPS, electronic compass, car detection, hard disk maintenance etc .(Need the user staff with a certain degree of professional knowledge and operational capabilities)

Description:
Supports 3-5.5V power supply.
RS232 can choose male or female.
The package contains six DuPont wires.
Use high-quality chips.
In order to facilitate the use of the product, each pin is marked, and a schematic diagram of the product is printed on the back of the product.

Instructions for use:
(Taking the access MCU as an example, how to connect each row of pins)
TTL (UART) side:
VCC: DC 3V-5.5V
GND: Connect to GND
TXD: Connect to MCU.RX (Signal Flow: MCU.RX ← SP3232 ← RS232.TX )
RXD: Connect to MCU.TX (Signal Flow: MCU.TX → SP3232 → RS232.RX)
CTS, RTS is not used by default.

RS232 side:
RXD: Connect RS232.TX (Signal Flow: RS232.TX →SP3232 → MCU.RX)
TXD: Connect to RS232.RX (Signal Flow: RS232.RX ← SP3232 ← MCU.TX)
GND: Connect to RS232.GND
CTS, RTS is not used by default.

Package Included:
1 pcs TTL to RS232 Module