The bidirectional logic level converter is a device that can safely downgrade 5V signals to 3.3V while simultaneously boosting 3.3V to 5V. The bidirectional module works with 2.8V and 1.8V devices and can be transmitted bidirectionally between high-side logic voltage and low-side logic voltage with 4 channels. Each logic level converter can convert 4 pins on the high side to 4 pins on the low side, with two inputs and two outputs for each side. Color: Blue Material: Plastic Package Contents: 60 x 4-Channel I2C Bidirectional Logic Level Converter Module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in a little different from the real thing. The measurement allowed error is +/- 1-3 cm.