4-Channel Logic Level Converter Bi-Directional

From the shop's description

Module Operation To use the module, you hook up the two voltages that you want to convert between to the LV (low Voltage) and HV (High Voltage) inputs. The higher voltage is always connected to the HV side. If using with an Arduino, you would typically connect the 3.3V output of the Arduino to the Low Voltage (LV) input and the 5V output of the Arduino to the High Voltage (HV) input. There are two grounds on the board as well. The module comes with 2 strips of male headers. These can be soldered on for use on a breadboard, or you can attach wires directly to the board depending on what your application requires. If soldering the headers on, it is recommended to insert the headers into a solderless breadboard first to hold them in alignment while soldering. Features: 4 Bidirectional channels Converts 3.3V ↔ 5V logic safely Ideal for I2C, SPI, UART, and GPIO Compatible with Arduino, ESP32, ESP8266, Raspberry Pi Compact and easy to use Protects low-voltage devices from damage Essential for mixed-voltage electronics