Which Driveway Wireless Alarm Sensor Unit is Best for You?
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If you’ve thought about getting an alarm system for your home or business in the past but decided against it because of the price, you really should take another look at this time. Not only have the prices come down on some of the best technology, but the types of sensors and what they detect has exploded to where you can cover your home or business like it was Fort Knox. Here is list of the latest types of sensors.
Passive Infrared Detectors
These have been out for quite awhile now and have become smaller and more sensitive as the technology has progressed. They can be aimed at a walkway, driveway, room, or almost anything and detect movement within their field of vision. They run on almost no current since they don’t emit any rays, instead they are looking for changes in temperature between the ambient background and anything else. Since humans are either hotter or colder than what’s around them, they set off the sensor.
They have an advantage/disadvantage in that the sensors won’t detect anything through glass. Therefore, you can use them inside of an office with a large glass window with people passing by and not worry about false alarms.
These operate differently than the Infrared detectors since these actually do send out super high pitched sound and then listen for a series of changes that indicate the sound is bouncing off of a moving object. They are great for protecting a complete room. Nothing over a certain size would be able to move anywhere in the room without setting off the sensor. When you see people on TV shows defeating alarm systems, that was before these were invented.You can see a few consumer reports driveway alarms here.
They work outside as well but dogs and maybe cats could set them off frequently in many areas. They make great sensors to turn on cameras, however, so that recordings can be made or security personnel notified to watch movement on a screen.
These are possibly the oldest type of sensors but they are still quite popular for certain locations. They are perfect for busy areas that have doors or windows where all you need to know is if something is being opened or tampered with. They have a really low false alarm rate but won’t detect movement that doesn’t break the contact in the switch.
These are perfect for certain areas that other switches and movement detectors won’t work in. The two most common places are door mat sensors and driveway sensors. In that case they can be set so that they only work when a certain amount of weight is applied in order to rule out cats and dogs and only detect maybe cars, motorcycles, or people.
These have lots of uses in driveways since they can be placed in hidden locations that a person entering wouldn’t suspect. Then they can be set to either turn on a light, sound an alarm, or start a camera recording, whichever is preferred. These come in wired or wireless models as far as sending the alert signal to the base unit of your alarm system. The makes it a lot easier to install them far from your home, maybe near the entrance to your property.
Metal Sensing Detectors
Another great option for driveways is the magnetic metal detector that will only be alerted by vehicles made of metal. This would stop the sensor from going off when animals or people pass over. This has its uses depending on what is needed. If you have it set to open a gate for cars but don’t want pedestrians coming in, then it’s a perfect solution for that problem.
Many drive-through windows in businesses now use these to only detect vehicles and not sound alerts for walking people or animals. These have a very low false alarm rate when used as intended. These can be purchased so they send their alert wirelessly so putting them far from your base unit wouldn’t involve running long stretches of wire.
There Are Times When Two Sensor Are Better Than One
Many cameras have infrared sensors built into them that can detect movement but they are also fairly large and obvious to those entering a premisses. On the other hand, a pressure sensitive mat or hidden driveway sensor is less obvious and nearly impossible to be disabled. By having both and coordinating their actions, when the camera doesn’t detect anything but the driveway pressure sensor does, you’ll know you have a problem that may need to be investigated.
There are a lot of situations were pressure sensitive switches can be placed under mats, carpets, tiles, and concrete slabs where they are completely invisible to those approaching or walking by. They give the business owner or homeowner an invisible advantage when people are trying to avoid detection. These days, even an international jewel thief would have a hard time defeating a well protected home without being caught.