Electronic locks with a secret code Please contact via WhatsApp Works with Bluetooth through the ttlock app Opening methods: Fingerprint Secret code Card And a regular key. The locks work via Bluetooth: You can change the code through the app, and there are random codes already stored in the database for the locks. This means you can activate the code via the app and specify the duration of the random code's validity in hours or days, or it can be for one-time use only, depending on your preference. You can activate and deactivate the code from the app from anywhere. Please contact via WhatsApp ( Phone number appears when clicking the contact button )