Safety Tips: Home Security

How Sievers Security door, window, and motion sensors work

Sensors are a vital component of any security system. A good quality system consists of a central control panel, keypad, and door, window and motion sensors.

Door and window sensors detect for intrusions around the perimeter of your home, while motion sensors detect for movement or changes in temperature within the home. These signals are sent to the control panel with information about which sensors were activated. If your security system is armed, and a security code is not entered in a specified amount of time, the security system immediately triggers an alarm sending vital information to the Sievers Security monitoring station.

There are different types of sensors, though they all perform the same basic function. Understanding how your sensors work and how to keep them maintained will keep your security system running optimally and reduce the risk of break-in.

Door and Window Sensors
Door and window sensors protect the perimeter of your home. If a door or window is opened when the alarm is on, the sensors send a signal to the control panel triggering a security breach. For maximum protection, sensors should be placed on every door and window in the home.

A sensor contains a circuit, in any circuit electricity flows when you give it a path between two points of opposite charge. The circuit is turned on, or off, when you open or close the circuit.

Sievers Security installs high quality, battery powered, wireless sensors. These sensors are precisely lined up so when a door or window is closed the circuit is complete. The opposite happens when the door or window is open – the circuit is not complete and a signal is sent to the control panel as to which door or window has been opened.

Motion Sensors
Motion sensors are passive infrared devices that detect for changes in temperature that pass through its field of view. Because an intruder's actions are unpredictable, a specific trigger such as a door or window sensor isn't very effective. Instead, a motion sensor is used to detect an intruder that is already in the home.

In order to make a motion sensor that can detect a human being from an animal, the sensor must be sensitive to the temperature of a human body. Humans have a skin temperature of about 93 degrees Fahrenheit and radiate infrared energy with a wavelength between 9 and 10 micrometers.

When an intruder walks into the field of view of the motion detector, the sensor detects a sharp increase in infrared energy sending a signal to the control panel. Sievers Security motion sensors distinguish between the heat radiations emitted from a human body and an animal reducing false alarms.

Glass Break Sensors
Although door, window, and motion sensors are an important part of a security system, glass break sensors add to the line-of-defense.

A glass break sensor detects for certain sound frequencies and strong vibrations that regular window sensors may not pick up. When the sensor detects the shock generated by shattering glass, the alarm is activated. These sensors are designed to detect a break-in before an intruder has time to get inside the home.

Security System Maintenance
To make sure your security system functions optimally, it is important to check your sensors regularly to make sure they are not dirty, damaged or otherwise obstructed.

Inspect the frame around each door and window checking for rotting, warping or any other condition that may have changed. Adhesive usually holds sensors in place; check to make sure your sensors do not require refastening.

Wireless sensors are battery powered, test the batteries, and replace as required.

Sievers Security monitoring station and your keypad will help you keep track of system performance, however regular physical inspections are always a good idea. Call Sievers Security anytime there is a concern about your security system or the proper use of it.

Sources:
howstuffworks.com
about.com
ehow.com


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