Access control system by Bluetooth. Management from an APP or WEB platform from where readers can register and send invitations to users by email. The electronics of this receiver allow it to be installed in a hidden way in the back of door entry panels and video intercom (behind panoramic card holders, push buttons) or in distribution boxes, watertight or in false ceilings. The access control APP allows the opening of doors from the mobile. The receiver does not need to be connected to a WIFI (offline) network. The APP also updates the registration and cancellation information on the receiver as well as any changes that will be synchronized with the cloud (registrations, cancellations, timings etc). The receiver connects to the APP thanks to its Bluetooth BLE connectivity (max. 10m). The activation of the receiver relay allows both pulse activations, as well as timed or switch mode.