Its multiple functions always satisfy your requirements, No need Gateway to Connect WIFI. Can Send temperory passcode. View access logs. Open the lock by app remotely. Grant access to your home even when you're away.

Unlock: APP/Fingerprint/ RFID Smart Card / Password

Battery Type: AAA Battery

Materials: 304 Stainless Steel Aluminum

Waterproof Grade: IP44

Automatic Lock: Yes

Adjustable Door Lock Time: Yes

Low Battery Reminder Function: Yes

Working Temperature: -30-60 degree

Bluetooth standard: Bluetooth 4.1 BLE

Power supply: 4 alkaline dry batteries

Charging port: MICRO USB