Lonely Binary Logic Level Converter Kit – Reliable Voltage Shifting Effortlessly connect 3.3V and 5V devices with the Lonely Binary Bi-Directional Logic Level Converter. Perfect for MCUs and sensors, this lead-free kit with an Immersion Gold Black Matte Finish ensures reliable performance. What's in the box 18 x Two-Channel Logic Level Converters: For I2C (SCL, SDA) and similar dual-signal applications. 6 x Four-Channel Logic Level Converters: For SPI (MOSI, MISO, SCLK, CS) and multi-signal applications. 3 x Six-Channel Logic Level Converters: For LCDs and high-density signal applications. 1 x Storage Container: Durable plastic case for organized storage and transport. NOTES Ensure proper connection of high-voltage (HV 5V) and low-voltage (LV 3.3V) sides to avoid damage. Suitable for digital signals only; not designed for analog signal conversion.