Home Alarm Systems Contain a Control Keypad
With the high rate of crimes such as burglaries and home invasions or possibly fires and even sometimes such things as carbon monoxide leaks, a home alarm system can be a great investment for home owners as well as renters.
Some home alarm systems are designed to notify parents when their children arrive home from school, which is a good way for parents to know when their children have arrived. This type of feature notifies the parents either by using a pager system or in some cases a phone call.
Home alarm systems contain a control keypad which is used to activate or deactivate the system. The other parts consist of a phone jack, bells or some type of alarm, a battery, transformer, and sensors for the doors and windows of a house or apartment.
The system is generally in a metal box that can be located in a closet or the basement. A battery which is contained within the box supplies power in case the power to the house should go out due to a storm or for some other reason.
Due to the fact that most alarm systems are low voltage, a transformer may be connected to the system box and plugged into an electrical outlet close to the box.
Magnetic sensors are attached to the doors and windows. When the windows or doors are closed, voltage flows through the sensors, however, if a window or door is opened the contact is broken and the bells or alarm will ring. Some home alarm systems are designed to activate the bells or alarm if the glass in a window or door is broken.
There are some monitoring agencies that have wireless home alarm systems which can eliminate the need for wiring. When monitoring agencies are used, they can call whatever agency is needed in an emergency such as a fire or an intruder.