First, put the KEY of the battery in the "ON" position. Find the "M" button on the moniter,  long-press it for a few seconds, then you will see the display is on. Long-press the "M" to close it.

First, put the KEY of the battery in the "ON" position. Find the "M" button on the moniter,  long-press it for a few seconds to open the display, and then find the "+" button long-press it you will see the front light is open. Long-press the "+" to close it.

First, put the KEY of the battery in the "ON" position. Open the display by "M" button,  and choose PAS levels by shortly press "+", PAS grade +1, shortly press"-", PAS grade-1. You can choose 0-5 levels.

Follow these steps please: