For a home or office system, consider the Skylink SC-1000 Complete Wireless Alarm System. You'll be able to install your system throughout a 100 foot range.
Most people find that this is more than enough range. You manage this security system yourself, saving money over the monitored security systems with monthly fees. False alarms are kept to a minimum through the implementation of the Rolling-Code system, so you can have the security without the nuisance. You can choose as many as 9 phone numbers for the system to dial upon the alarm going off.
One of the more innovative home production devices actually calls three numbers when an intruder enters your home. It is called the Home Security Burglar Alarm System Cell Phone Dialer. Detecting motion up to 20 feet away, these infrared motion detectors are operating at all times. It's ready to operate once you install four AAA batteries and connect it to an existing phone line. On top of dialing numbers, the 125 dB alarm will cause the intruders to think twice about entering. There is a code that you must enter in within 30 seconds to be deactivate it when the alarm is actually on. Certainly a wonderful way to protect your home, for only 30 bucks, the Home Security Burglar Alarm System Cell Phone Dialer can provide you with home security on the cheap.
Having a home security system can be beneficial for many reasons. Your primary reason for getting one is to prevent thieves from stealing from you. It's easy to catch thieves with cameras that record their activities. You can do that as well. One feature that many people really appreciate is the panic button that many home security systems come with. This is a button that you can press to instantly alert someone that you need help. You might have a medical condition, and this type of a button will also be able to help you, even if you are not being attacked. So there will be the cost of the installation, and a monthly fee for the panic button. These are the costs you will have to pay to monitor your home every day.
You should have a solid idea of what security systems have to offer. If you don't have any type of system set up now, you should get one as soon as possible. It cannot be overemphasized that having any home security system at all is better than having none. Burglars will rarely choose to invade a home with a good security system when so many other homes have no security systems in place.