How are electromechanical built in locks powered?

Electromechanical built-in locks are typically powered by batteries, which provide the necessary energy for their electronic components and locking mechanisms. Some models can also be hardwired into a building's electrical system. These locks often feature backup power options, such as a key override, to ensure functionality during power outages or battery failures. Additionally, some advanced versions may utilize energy harvesting technologies to sustain power from user interactions.