2/4/8 Channel Iic I2c Logic Level Converter Bi-directional Board Module 2 4 8 Way Dc 3.3v/5v With Pins For Arduino Raspberry Pi - Instrument Parts & Accessories - AliExpress
I2C Logic Level Converter with Regulator Module - ProtoSupplies
4-channel I2C-safe Bi-directional Logic Level Converter [BSS138] : ID 757 : $3.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Buy IIC I2C Logic Level Converter Bi-Directional Module 5V To 3.3V For Arduino at affordable prices — free shipping, real reviews with photos — Joom
Using Logic Level Converters | Artekit Labs
A Quick Guide on Logic Level Shifting : 5 Steps (with Pictures) - Instructables