Wireless Home Security Systems

Hardwired Security Systems
Wireless Security Systems
Selfl-Contained Systems (portable alarms)
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Wireless Security Systems

The development and production capabilities of modern manufacturing facilities have created cheap, effective wireless security systems. Wireless systems are comprised of a main control or console panel that integrates the electronics devices needed to receive signals from all the different types of transmitters placed at doors and windows around the house. The remote transmitters or sensors most often use batteries which you must periodically change. Many systems also have the capability for remote sensors to transmit their current state periodically. This way the panel can tell you if a remote sensor's batteries are low in power.

Wireless security systems are very cost effective for use in homes that are already built. There are a number of wireless accessories that can be used with them as well. Anything from a remote garage door opener, to wireless key chain transmitters kept on a person are considered wireless security accessories.

Wireless systems use radio frequencies to transmit data and certain ranges of frequencies are permitted to be used for these systems. Numerous electronic devices use the available radio spectrum including televisions and radio station broadcasts, police, fire and ambulance two way radios, wireless home phones, cellular phones, shortwave radios and more.

Three radio frequency ranges have been set out for use with wireless security sytems. The 40 Mhz spectrum is where most cheap wireless systems operate. Systems operating in the 300 to 420 Mhz range are a better system because these systems use less battery power to operate, the signal is narrower and less subject to interference and the signal can penetrate building materials better so they are more likely to work. Motion sensors may broadcast at a very specific frequency such as 300 Mhz and that means less power is used and there is a reduced chance of interference. Government authorities tend to protect that range of radio frequency from misuse.

The 902 to 928 freqency range is called the spread spectrum. Security systems in this range send redundant signals via different frequencies to ensure the message is received by the console. This technique offers better resistance to interference however it requires more battery power and may not penetrate building materials very well.

To avoid false alarms and interference from more than one sensor sending a signal at the same time, these systems may utilize different identification codes for each signalling sensor. They can also use an encryption coding that only the system receiver can decode. These are important to indicate which sensor is sending an alarm signal.

Top wireless systems may use more than one antenna in the control to allow each antenna to specialize in a range of transmission frequencies. Learn mode technology is an excellent feature that allows the control panel to program each of the sensors that are being connected to it. The control panel will only listen to the sensor units that have been added to its system.

Wireless systems use a variety of sensors including infrared sensors (PIR), smoke detectors, heat sensors, shock sensors, glass break sensors, carbon monoxide sensors, and sound sensors.

Learn more about home security systems.