his module Converts logic level of 3.3V and 5V to one another. This is bidirectional.

Dimension:4.1*1.8cm

Compatible with breadboard

8 Channel high voltage and low voltage logic converter bi-directional

Instructions

HV- 5V

LV- 3.3V

GND- Power-, two ground

LVx Input Output 3.3V TTL,

HVx input output 5V TTL,

LVx and TVx converter bi-directional