Alert system, delivery system and method and door bell system

A doorbell system, comprising at least a doorbell, a doorbell control system and an electronic screen, wherein the doorbell control system comprises:

• a memory for containing address information and an interface for presenting at least one address on said screen retrieved from said memory and/or
• an input device for receiving at least one address from outside the doorbell system and an interface for presenting said address on said screen,
• wherein the doorbell is coupled to the doorbell control system for activating the interface for presentation of the information on said screen;
• and/or
• wherein the doorbell system comprises a beacon for wireless communicating with a hand held device, such as a smart phone or a laptop, preferably-suitable for two way communication, and/or
• wherein the doorbell is connected to the doorbell control system for initiating sending the first and/or second signal and a doorbell signal for activating a chime, wherein the doorbell control system comprises at least one acoustic and/or vibration sensor for receiving an alarm signal from said chime.

A doorbell system comprising:

• a doorbell alert system, comprising at least one sensor and electronic circuitry, wherein the at least one sensor is connected to the circuitry, said circuitry further comprising or connected to at least one antenna for sending out a wireless signal,
• a doorbell chime and a doorbell chime activation system;
• wherein the at least one sensor is an acoustic sensor or a vibration sensor for registering a sound of the doorbell chime,
• wherein the at least one sensor is positioned close to the chime.