MagiDeal 8 Channel Logic Level Converter Bi-Directional Shifter Module 5V to 3.3V TTL Pack of 1 Mutual transform between 5V TTL and 3.3V TTL Logic level shifter Bi-Directional with 8 channels transform the high logic voltage to low logic voltage Comes with 2 rows of 6 pin contact pins,unsoldered Compatible with breadboard, can be directly use in breadboard Portable,small,easy to use!