4 Channels IIC I2C Logic Level Converter Bi-Directional Module 3.3V to 5V Shifter for Arduino

The bi-directional logic level converter is a small device that can safely downgrade 5V signals to 3.3V while simultaneously upgrading 3.3V to 5V.
This bi-directional module works with 2.8V and 1.8V devices and can be transmitted bi-directionally between high logic voltage and low logic voltage with 4 channels.
Each logic level converter can convert 4 pins on the high side into 4 pins on the low side, with two inputs and two outputs for each side.
The board must be powered by the two voltage sources (high voltage, low voltage) that your system uses.
How to use it:
The level converter is very easy to use. It must be powered from two voltage sources (high voltage and low voltage) that your system uses.
Take the high voltage (5V) and low voltage (3.3V) for example.
5 V is connected to the HV pin;
3.3 V is connected to the HV pin;
Ground from the system connects to the GND pin.