4-Channel I²C-Safe Bi-Directional Logic Level Converter (BSS138)

Four-channel BSS138-based level shifter that handles I²C cleanly in both directions. Connects a 3.3V microcontroller to 5V sensors (or vice-versa) without level mismatch causing communication failures.

Pre-assembled, just solder header pins on either side. Open-drain handling means SDA and SCL pass through correctly.