Module model: -usb-ttl-01 Usb-c Interface USB to TTL module is not equipped with USB cable by default. You can use the mobile phone data cable to connect to the computer (not a cable that can only be ) After connecting to the computer USB, you be prompted to install the driver. After downloading the driver from the following link, the installation is successful. Check that the computer device management have com port The USB to TTL module is connected with the sensor module, and the wiring mode is usually connection, . rx---tx, tx---rx The output voltage of VCC is 5V of USB power supply. When sending and receiving data, the corresponding RX and TX LED flash Color: Black Material: PCB Package Contents: 1 * Module 1 * Pin header Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.