SBR20EBL41 can unlock by fingerprint/bluetooth/remote control, and the fingerprint sensor is bank level and copied fingerprint can not unlock, As remote control such as people can use the remoter to open the door remotely, no need to unlock in front of the door, it is very convenient when at home, just like watching TV, you can use the remoCar to turn on the TV and this unlock remotely, 5~10m.