Silver. The Abus Loxeris One is a motorised smart Bluetooth door lock drive for front doors which enables the locking and unlocking of the front door. It fits on the inside of the door and is controlled via the Abus One app. . Bluetooth door lock drive for front doors – Fits on the inside of the door. Lock & Go function locks the door a few seconds after leaving the house or flat at the touch of a button. Suitable for Euro profile cylinders according to DIN 18252 and DIN EN 1303 with emergency feature. Simple and wireless installation