Small size, 4.1× 1.8cm/ 1.6× 0.7in
It can bidirectionally transfer with 8 channels between high logic voltage and low logic voltage

Instruction:
Take the high voltage (5V) and low voltage (3,3V) for example.
5V connects to HV pin;
3.3V connects to LV pin;
Negative pole connects to GND pin.

Package Includes:
5× 8 Channel Logic Level Converter Bi-directional 3.3V to 5V TTL Shifter Module
5× Single Row Pin Header(10 pins)