Because Putty is a jack of all trades (SSH, Telnet, Rlogin, and serial) but master of none. Tera Term is powerful but slow to launch and overkill for 90% of tasks.
The interface clearly shows the status of RTS, DTR, and other hardware flow control pins. Sscom 5.13.1 English
SSCOM 5.13.1 is a lightweight, portable Windows utility designed for serial port debugging, supporting RS232, RS485, and USB-to-serial communication. The tool, which is popular for microcontroller development, supports English, handles baud rates up to 921600bps, and enables data analysis in ASCII or HEX formats. For a complete guide and download, visit Drive The Life Capacitive Soil Moisture with LoRaWAN (English) Because Putty is a jack of all trades