Features: 1. Logic level converter can connect 3.3V (even lower voltage sensor) to 5V micro controller like for Raspberry Pi. 2. With this module, you can easily connect different logic voltage and levels. 3. Two-way communication on up to 8 channels, allowing the use of low-voltage sensors with 5V micro controllers. 4. The connection is simple and does not require particularly complicated operations. 5. Built to strict quality control standards, design improved for more durability. Specification: Color: Red VCCA is connected to for for Raspberry Pi 3.3V power supply VCCB connect to 5V power (it can be external 5V power) GND is connected to the negative pole, and both power sources share ground Ax input for Raspberry Pi 3.3V TTL level. Bx output 5V sensor module TTL level Bx input TTL level of 5V electronic module. Ax output for Raspberry Pi 3.3V TTL level Package List: 1 x Module 1、Logic level converter can connect 3.3V (even lower voltage sensor) to 5V micro controller like for Raspberry Pi. 2、With this module, you can easily connect different logic voltage and levels. 3、Two-way communication on up to 8 channels, allowing the use of low-voltage sensors with 5V micro controllers. 4、The connection is simple and does not require particularly complicated operations. 5、Built to strict quality control standards, design improved for more durability.