A security sensor is used to sense motion or harmful gases either inside or outside of the home. They come in a variety of sizes and shapes. The sensors have varying functions depending on what section of the home or yard is being watched. A security sensor can either sound an alarm or record activity once it has been triggered. Although they are primarily used as a deterrent for home invasions, they can also be used to monitor other situations within the home. Some of the most vulnerable areas of the home are typically the doors and windows. An intruder can manipulate locks and enter the home, sometimes unnoticed. When a security sensor is placed over the frame of the door or where the window and frame meet, it can sound an alarm if either one is opened or if any glass is broken. The alarm can scare off the intruder and alert any people indoors of the attempted entry. A security sensor alarm can also alert neighbors of a break-in when the home owner is not present. Simple motion detectors can stop an intruder before he attempts to enter the home. A motion security sensor is typically placed outside of the home and over the front door. When it senses motion, it responds by turning on a bright light. This can scare the intruder away and alert the people inside the home when someone is at the front door. Security cameras are often used to capture suspicious behavior or crimes. These cameras are activated by motion sensors, after which they record activities in their field of view. They typically do not sound any alarms, but the activity can be seen within the home if the camera is hooked up to a viewing monitor. With this type of security sensor, the crime can be recorded and the police will have a tape of the offense as well as a clear description of the offender. Most types of security sensors are not expensive. Some sensors require a good deal of home wiring knowledge to be properly installed. The best way to protect the home is to use a combination of security sensors. There are several types of monitoring devices that can keep the home safe. A carbon dioxide sensor can detect harmful gases that can cause a host of medical problems. Other types of sensors can record the air quality and detect smoke for an early warning during a fire. Ozone sensors can measure ozone concentrations and natural gas sensors can be used to detect gas leaks.
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