This module is an isolated USB-TTL. The interface used is the mainstream TYPE-C interface. Insert the TYPE-C data cable to connect to the computer. The signal sampling is a dedicated signal isolation chip, which makes the output more stable. The power indicator light and the humidity module are more clear.

Parameters:
USB power supply: USB 5V, TYPE-C interface
TTL terminal power supply: 3.3V, with power indicator
TTL end signal level: 3.3V (TTL end only supports 3.3V power supply and 3.3V TTL signal, not 5V!)
Communication protocol: pure hardware equipment, not restricted by protocol
Baud rate: up to 25600bps
Isolation level: power isolation and signal isolation, isolation voltage AC300oVrms, static ±8KV
Temperature range: -40℃-80℃
Support system: support hot swap, support win98/CE/2000/2003/2008/XP/WIN7/WIN8/WIN10/VISTA/-
LINUX/MAC OSX system, USB interface is hot-swappable
Product size: 23mm*23mm*7mm

Interface Description:
3.3V: 3.3V output positive
RX: UART serial port input
TX: UART serial port output
GND: negative pole of power output
TYPE-C: USB interface to computer

Note:
The 3.3V pin on the TTL end is not the output voltage of the module. This pin needs to supply power to the module. There is a power indicator light. The power indicator light must be on to work!