GSM Gate Opener

When the GSM Gate Opener receives a call it reads the caller ID then drops the call. If the calling number is in the list the gate will open otherwise if the number is unknown or withheld the caller is ignored.
Advantages of GSM Gate Opener
Safe: nobody can clone your phone as easily as they can do with a standard remote control
Flexible: you can add or remove anybody number in a minute with an SMS

Cheap: you don't need to buy a remote control for each member of your family

Convenient: no matter if you change car, or if you have different gates to open. Your phone will always be with you all the times your remote controls were somewhere else!        

When someone leaves the business or moves out of the property then their phone numbers can be immediately deleted by text message. This means only known numbers can have free access and other visitors need to make their presence known in order to be allowed in.

Caller ID Access: the unit set to secure mode means only numbers  programmed the unit can operate it. If a number is withheld or unknown to the unit it is completely ignored.

This means anyone who knows the number can operate the gate/barrier. Should at a later date it is decided that too many people have the number, simply change the SIM card and then re-issue the new phone number.

Open Access: allowing anyone who knows the access number could be allowed to enter, the number given to both residents and visitors of the community or business.

There are a number of options for business use and gated communities.

GSM Gate Opener is an electronic that links to a GSM module, supplied with it. The purpose of this device is to be installed in parallel of the low voltage opening button of an electric gate to enable it to be opened by means of a GSM phone.

It has a relay whose contact has to be connected in parallel with the button which opens the gate. It has a White List of numbers who are enabled to open the phone, up to 64.