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Door Buzzer Systems

We have come to rely so much on doorbells and door buzzers in modern homes and facilities, that we may not even stop to wonder how they work. They are at once a simple design operation yet a marvel in their simplicity. An electromagnet is at the core of all conventional doorbells and buzzers. An electromagnet is a wire coil wrapped around magnetic metal. Some have the wire wrapped around a metal piston that can be moved forward and back by the electromagnetic field. Electric current is run through the wire and creates a magnetic field around it. Depending on how the buzzer is set up, pushing a button breaks the contact or moves the piston against metal and makes the sound of anything from a bell ringing, a soft chime, or a buzz, hence the name buzzer.

Door buzzer systems may be used in large commercial businesses, in assisted living facilities, nursing homes, secure areas inside medical facilities, apartment buildings, gated communities, or even large homes or estates with several doors or driveway gates to secure. They come in a wide variety of options, from a simple buzzer on each end, to elaborate systems with telephones and cameras so a monitor can see the person requesting entrance.

Where-ever the entry to a building needs to be controlled, a safe way to allow access and keep the premises secure is to install door buzzer systems that will control who enters the building. This gives your workers a secure feeling to work efficiently, and allows your tenants to feel safe in their homes. For commercial buildings or office complexes, the system must provide a buzzer or entry chime a visitor can sound, and a central or security area where the access door is monitored and someone releases the lock for entrance. Systems range from simple buzzers that an individual tenant can answer in an apartment, to more elaborate systems with video cameras for commercial buildings, where an employee or security guard will always be available to grant entry to authorized personnel or visitors.

Determining Security Level

Before starting out to purchase a door buzzer system, first decide exactly how much security you want from the system, whether you can use the simplest of systems, or if you need a more extensive one with cameras and a security guard to grant access. Also consider how many doors you want to secure. If you have a large facility or commercial business to secure, you will need a system that can be regulated, with an employee ready to grant access to the building and who will be accountable to report who has entered the building if a problem should occur. Also, someone will be on hand to alert security, call police, or handle a situation on their own. If you have a camera connected to the system, you will have recorded proof of any incident that arises, without having to take the word of eyewitnesses.

In the case of an apartment complex, however, it is just about impossible to control who enters the building, if each tenant is able to buzz in a visitor who sounds the buzzer from a downstairs entryway, for example. Having the buzzer system is still necessary and a good idea--it just means that each tenant must be held somewhat accountable as to making sure they know who they are allowing into the building, for the safety of all residents. Security cameras can still be added in the downstairs entryway, even though entry will be granted to visitors by each tenant. When tenants know they will be held responsible for allowing access, and that cameras are recording each entrant, it will add a measure of security to your system, so consider adding cameras to your door buzzer systems.

If your system purchase and installation is well-planned, you will find it easy to expand upon later if needed. If you know you will only ever have one door to secure, this will not be necessary, but many systems are available that can link two, four or eight doors together, and buzzers can be added as needed. When you have decided how many doors you need to secure now, and if you will need to expand in the future, then start to gather information on each factor. The kind of doors in your facility or building will help determine the system you will use. Before you begin to shop or talk to a company representative, determine the material of your doors, and know if they are aluminum and glass, solid steel, wood with windows, solid wood, and so on. Do you have doors that are for employees only and other doors for customers, or will all doors admit anyone who should be admitted to the building. Think about whether any of your doors are designated fire break doors, or do you have separate parking lot doors or access gates that need to be controlled, as well.

You also need to know how the visitors or employees will exit the building. Will you have free exit so that someone need only push a button or approach the door to leave, or do you need more control. If you need to know exactly when someone exits a building, that will add another option to the system you will eventually purchase. In exiting a medical facility, for instance, some systems require an employee to accompany the visitor and buzz the person out, and the more elaborate systems record the day and time. If cameras are set up, you also have a video of who has left the building and if they are carrying objects with them.

Where To Purchase

Door buzzer systems can be found at local home improvement stores, department stores or hardware stores. Business that install security systems will also have more simple door buzzer systems available. If you are securing a large facility, you will want to consult with a professional who can give you all the particulars of each system so that you can make an informed decision and select the exact right product for your needs.