Typically, alkaline batteries must be changed every year.  Newer systems often use lithium batteries that should last 5 years or more. Alkaline batteries can be purchased at any hardware store for a few dollars. Lithium batteries are more expensive and are often available at your local store.  Of course, Quantum Security maintains a fresh supply at all times.

Many factors affect this choice. The major factor is the construction and decoration of the premises. Can the location be wired and how much labor will be involved in wiring for the alarm? Will wireless devices be able to communicate to the alarm panel? Plaster walls with metal lathe in them can block the wireless signals. Large mirrors, foil wallpaper, metal lockers and other radio systems nearby might prevent a wireless system from working properly.

In one word, "NO".

Quantum Security Systems' pricing is highly competitive and is often less expensive than those systems that are being advertised as "FREE" elsewhere.
 
As members of several professional security organizations, we recommend that you obtain 3 proposals before deciding on the right security providor for you.

An End-Of-Line resistor supervises the wiring between the alarm panel and the switch. Some panels have a limited number of detection zones and do not require EOL resistors. But if the panel can use EOL resistors to supervise the wiring, the resistors should be used. If more than one detection device is on a single detection circuit, the EOL should be at the last device. When feasible, every alarm detection device should have an EOL resistor at the device.

This depends on you and your installing company. Does the burglar seeing the switch go elsewhere because he now knows you have more than just a sign and some decals? Can the burglar defeat the contact just because he can see it? Some people cannot tolerate the sight of normal surface mounted contacts or feel unsecure because "the burglar knows what's there." Other people feel secure seeing the switches because "the burglar knows I really do have a system installed by a professional." Surface mounted switches often are easier to install.

Every accessible door and operable window should be protected. All glass windows should be protected with some sort of shock/audio detector. Windows can also be protected using alarm screens instead of contacts and shock/audio detectors. Obviously in a three story residence, the windows on the third floor cannot be opened by normal means; screens, vibration sensors or audio detectors should be sufficient if the windows are kept locked. Rather than contacting these third floor windows, the money could be spent on additional interior protection or other security features like fire detection.