Smart locks can work with existing deadbolts, depending on the model and manufacturer. Some smart locks are designed to completely replace the existing deadbolt, while others can be installed on top of the existing deadbolt. If you want to keep your current deadbolt and use a smart lock, make sure to choose a model that is compatible with your existing lock.
Additionally, some smart lock manufacturers provide adapters and retrofit kits that can convert your traditional lock into a smart one. These kits allow you to keep your existing deadbolt and just add the smart features. Make sure to check the manufacturer’s website or user manual for compatibility and installation instructions before purchasing.