How to check the SN of the Mijia Air Conditioner Pro Eco LABEL EGAT NO.5 (3 Star) 12000BTU Inverter?

The SN (Serial Number) of the Mijia Air Conditioner Pro Eco LABEL EGAT NO.5 (3 Star) 12000BTU Inverter is a unique identifier assigned to each unit, used for tracking, warranty services, and troubleshooting.
The air conditioner's SN can be found in multiple locations:
1. Packaging box labels (both indoor and outdoor units);
2. Right side panel label of the indoor unit;
3. Accessory bag inside the indoor unit (SN sticker);
4. Inner label of the large handle on the outdoor unit;
5. In the Mi Home/Xiaomi Home APP.
Note:
The air conditioner's production year/month information can be found on the labels of the air conditioner's indoor and outdoor units.