In the max file the model is assembled into groups; during rendering smoothing at iteration 2.
In the obj export file the model is combined TurboSmooth is already applied.

Biometric electronic door lock LockMaster Pro
https://homelocktechnology.com/collections/catalog/products/lockmaster-pro 
PS-link F5-TY Smart Biometric Door Lock with Fingerprint IP65 Silver and Black.

Unlocking method from outside: remote control card key code fingerprint scanner smartphone.
Ecosystem: DIGMA SmartLife Tuya Smart PS-link Smart Life.