| An alarm system is a great way to provide extra | | | | Vibration Sensors: |
| protection for your home. There are plenty of options | | | | It detects a person through vibration. Many car alarms |
| available for you to ensure your home's safety. So | | | | have this feature to alert the owner that something |
| don't take chances. Protect your family with a home | | | | has bumped into their car. |
| security system that will safeguard your most precious | | | | Photoelectric Sensors: |
| valuables, and the people you love. | | | | Some motion detection systems use lasers and |
| What are they? | | | | photoelectric beams. The laser is shot across to the |
| Motion detectors spot the movement in areas | | | | other side of the room or doorway. If the laser is |
| covered by the security sensors. Motion detectors | | | | interrupted the unit's alarm signal is activated. |
| transmit high frequency radio wave signals. They give | | | | Ultrasonic sensors : |
| a warning that someone is entering into your home. | | | | They use a frequency around 30kHz. The transmitter |
| Different kinds of motion detectors & how they work: | | | | bounces the waves of walls, furniture, windows and |
| Infrared Sensors: | | | | ceilings and when the room has stabilized, the alarm is |
| Motion detectors use infrared light to detect heat | | | | armed. |
| changes, i.e. when a person moves across this light it | | | | Acoustic Sensors: |
| detects them with the help of the infrared sensors. If a | | | | They can detect the energy produced by any kind of |
| person moves in the range of the motion sensors, the | | | | sound, including breaking glass. In the case of breaking |
| alarm is activated. Infrared sensors are cheaper than | | | | glass from window intrusions, the pattern of the sound |
| microwave sensors and ultrasonic sensors. Infrared | | | | emitted is detected. |
| sensors are generally smaller and very reliable. | | | | |