I2C IIC Logic 4 Channel Level Converter Module Bi-Directional for Arduino 3.3-5V

Description:
Bi-directional logic level converter is a small device that safely steps down 5V signals to 3.3V AND steps up 3.3V to 5V at the same time.
This level converter also works with 2.8V and 1.8V devices.
What really separates this Logic level converter from our previous versions is that you can successfully set your high and low voltages and step up and down between them safely on the same channel.
Each level converter has the capability of converting 4 pins on the high side to 4 pins on the low side with two inputs and two outputs provided for each side
The level converter is very easy to use. The board needs to be powered from the two voltages sources (high voltage and low voltage) that your system is using. High voltage (5V for example) to the 'HV' pin, low voltage (3.3V for example) to 'LV', and ground from the system to the 'GND' pin

Compatible with 5-3V system
VIN connected 5V system power supply
5A connected 5V system
5B connected 5V system
GND connected 5V system GND
3V3 connected 3V system power supply
3A connected 3V system
3B connected 3V system
GND connected 3V system GND

Package Included:
1 * 4 Channel IIC I2C Logic Level Converter Module