Probably every motorist at least once left his car on the street with half-open windows in the summer or with an unlocked lock. Naturally, leaving the car in this form for the night is very dangerous, but today we will tell you about a tool that can protect any vehicle from theft. This device is the so-called volume sensor. This device allows you to respond to the smallest movements inside the car and, unlike shock sensors, does not give false alarms. So, let's figure out what this device is, how much it costs, what types are.
What is it for?
The main task of each sensor is to react to the penetration of thieves into the car and notify the driver with an audible signal that someone is fumbling in the car. It doesn’t matter if your transport is open or closed. In any case, the volume sensor will notify its owner of various movements in a specific protected area (that is, in the cabin). False alarms are minimized here, since this tool does not respond to a blow, but to the movement or approach of an attacker to a machine.
Varieties
Today, all existing volume sensors can be divided into three types: microwave, infrared and ultrasonic. The latter variety is the weakest and least effective, and therefore it is almost impossible to find such devices on cars. Microwave volume sensors are characterized by poor sensitivity to the movement of various insects and dust. And infrared devices are the most modern, efficient and popular among domestic motorists.
The propertiesEach volume sensor can be configured for a specific radius of action. But, in order for it to react essentially, it is necessary to establish it correctly. In each sensor model, the manufacturer himself indicates where and how to install it in the cabin. Some drivers even set an excessively long range so that anyone who came close to the car was "scolded" by an alarm. But if you look at it from the objective side, then this setting is not effective, because every 5 minutes the driver will pop out into the yard and turn off the siren. Yes, and the battery will not benefit.
Another important characteristic of the sensors is their effectiveness in relation to the unauthorized penetration of intruders into the machine. And even if the thief quietly breaks the door or turns off the shock sensors, he is unlikely to think about the existence of another security system, which will raise the alarm.
Volume sensor: device price
To date, the average cost of a microwave sensor varies from 700 to 800 rubles. Well, the most effective, infrared, the device will cost already 1200 rubles. Given how useful these sensors can be, this cost is pretty reasonable.
Remember - if you take care of installing additional protective equipment, your iron friend will never be hijacked by car thieves.