There are numerous proximity alarm product types on the market for a wide range of uses. Parents can buy an alarm a child wears on their wrist to help locate them if they get lost, power lines use proximity alarms to prevent high voltage accidents and car owners buy these security systems to prevent vehicle theft. The need for additional measures to secure your kids, automobile or other material items may seem obvious, but an understanding of how these products work will make the purchase easier.
Numerous manufacturers make a child proximity alarm that beeps when activated. These are usually in the form of a bracelet with a kid-friendly design. Pandas and fluffy rabbits or tigers are popular, and they are comfortable for children to wear.
The bracelet comes with a key fob for the parents, and it beeps when both are turned on. The beep is activated when the child has wandered out of the pre-set range, and is adjustable from three to sixty-five feet depending on the model. Be wary of cheap units, which use the same warning signal when the bracelet wearer wanders out of range as it does when the parent gets closer.
For a little more money, a child location bracelet with greater range and differentiating signals can be purchased. The models available are worn on the wrist and secured with Velcro. In this version, the parent switches the beeping sound to a ‘locate mode’ to find their little one. Even the costlier units are easily spotted and removed by predators, however, but the modest expense will buy peace of mind, knowing that a child has not wondered out of the garden or off to a nearby road for example.
A proximity car alarm will help prevent a break-in or external theft of rims, tires or trim. Manufacturers produce these as small units, which are placed unobtrusively inside the car. The majority of these alarms use microwave frequencies to detect movement inside and outside the vehicle.
The motion sensors set off warning alarms when someone is getting too close. Although an active unit, which is armed and disarmed by the owner, can be cheap, consider spending a little more for a passive system which arms as soon as the ignition is turned off. A passive system may cut you a break on auto insurance as well.
The most common car proximity alarms use a dual zone to create a ‘force field’ that surrounds the car to detect motion. Most are compatible with a wide range of car security systems, but check with the manufacturer or retailer to be sure. Sensitivity adjustments are a must-have to provide a pre-warning for the interior and exterior. When a person comes within range, the microwave frequency sensor zone is disrupted and the car’s alarm blares its pre-alarm warning.
A mobile proximity alarm is a valuable asset in today’s world of expensive, high-tech and hand-held devices. A small investment in this on-the-go security system can keep lap top computers, PDA’s, cell phones, purses, briefcases or digital cameras safe from thieves. The transmitter is placed on the item you wish to protect, and the range is set in synch with the receiver. When the programmed range is exceeded, a loud signal alerts the owner. These items cost a fraction of the cost of a digital camera or other piece of portable equipment, but can save the owner hundreds or thousands by preventing a theft.
While a proximity warning device for automobiles is wired into the car’s security system, child and mobile protection units are powered by batteries. The power source is typically a CR2032 battery. Child bracelets are cute and obvious but mobile alarms are no thicker than a credit card and some are half this size. Two obvious drawbacks are manual operation and range in a crowded public area.
A good alarm for the car will sense motion when the sensor field is disrupted and start the pre-warning sound; proximity is not really an issue. Unless the automobile is parked away from public attention, this system is a difficult obstacle to overcome; even for an experienced car thief. Distance and rapid detection are major issues with a child sensor, however. Kids move quickly, especially if someone older is moving them along. With all the environmental noise in crowded areas, a warning signal would need to be loud and disruptive to get the proper attention in time to prevent children from becoming lost or kidnapped.
This principle is true of mobile devices as well. A thief can move at a running pace with any portable electronic device and be out of range in seconds. Nonetheless, for the small cost these extra measures improve the odds of recovering a lost child quickly or reclaiming your valuables.
Before buying any type of distance-activated proximity device or proximity alarm, read through several unbiased reviews of equipment. You do not want to take chances with your valuables by buying a cheap, poorly manufactured model.