This module allows you to use 3.3 V sensors on a 5 V microcontroller.
Features:

1. breadboard compatible

Specifications:

1. low side (3.3 V): 2 inputs and 2 outputs
2. high side (5 V): 2 inputs and 2 outputs
3. other connections: Vlow (3.3 V), VHigh (5 V) , pass-trough GND
4. dimensions: 15 x 16 x 15 mm ( 0.59 x 0.62 x 0.59" )

wpi410a4v01.pdf

ce_rohs_open.pdf