The Altro Smart lock works on rechargeable batteries, which power the device for 1 to 2 months of continuous usage (estimated as per tests done in lab environment). If the Wi-Fi is not working, the smart lock will not support remote activities. In this situation, the smart lock will lock and unlock over the BLE connection and/or by using the smart keypad and your unique passcode. In case of emergency, the Altro Smart Lock comes equipped with a traditional key and keyhole.