A large number of buyers visit clothing stores, so it is very difficult for security guards and sellers to keep track of everything. To help workers in this field, owners establish a special framework for entry and exit - anti-theft systems. Such devices respond to certain sensors that attach to clothing. It is possible to remove them only with the help of a magnetic stripper.
Types of protection sensors
There are several common types of these devices:
- Systems with an anti-theft electromagnet. In such a sensor, the emitter and receiver are fixed on different parts. As a result of this, a powerful electromagnetic field is formed, the frequency of which is from 10 Hz to 20 kHz. To deactivate such protection, the label must be rubbed against the magnetic surface.
- Acoustic-magnetic systems. In such devices, the magnetostrictive strip is not fixed and can freely oscillate mechanically. When placing such a tag in a special “anti-theft” frame installed at the exit, when leaving the store, it will begin to create vibrations. Magnetic tag removers are used for deactivation.
- Radio frequency protection systems. Such devices consist of an inductor, a capacitor and an oscillatory circuit. It is to them that the protective frames installed at the outlet react. Deactivation requires a strong magnetic field of about 8.2 MHz.
- RFID tags. This is a special kind of sensor. Such devices are used not only for protection, but also in travel transport cards, hotel key cards. You cannot deactivate an RFID tag, you can only change the information in it, which is what the cashiers do after the sale.
- Rigid sensors. Such devices may have a magnetic or mechanical lock.
Magnetic Lock Sensors
Basically, such devices for protecting goods from theft have a universal lock, but there are other types that are very rare.
Types of sensors with a universal lock:
- Standard. To remove such protection, a magnetic force of 4000 G is required. You can remove it using a large neodymium magnet.
- Reinforced. Even the most powerful device will not help here. To remove, you will need a magnetic puller. The required power is an average of 8000 G.
- Superblock Need a puller for 9000-11500 G.
- Hardlocks are considered the most powerful and reliable sensors. Currently, only two companies produce such protection: Dural Tag and Check Point. To remove them, a force of 14,500 to 18,000 Gs is required. Due to their properties, their price is much higher compared to other companies.
Types of removable systems
Devices for removing sensors from products have several classifications. They are distinguished by the principle of work:
- magnetic;
- mechanical;
- automatic systems.
A magnetic puller is a device designed to remove sensors from a product. A magnet is built into the design of such an assembly. Such devices are mainly located at the checkout and, depending on the strength, are used to remove sensors of various kinds. The system operates autonomously from the mains. The term of operation is unlimited.
By the principle of structure, magnetic deactivators do not differ significantly. These mechanisms are classified by the power of the emitted pulse and the shape. The ability of a device to shoot simultaneously one or another number of sensors is determined by the strength of the conducted magnetic energy. In stores, as a rule, standard devices with small power indicators are installed. For example, a magnetic puller for clothes, used to remove ordinary "squeaking" tags.
For sensors of a new type, deactivators of a more advanced type are needed. Such devices are made of aluminum and are considered universal, because they can be used to open locks of different tags. The device consists of several magnets interconnected. Thanks to this, a powerful force field of directed action is created. Such a deactivator is a reinforced magnetic puller, it is attached with screws to the surface of the cash register table. This device can remove hard sensors, standard and with a reinforced lock.
The principle of operation of the magnetic puller
The sensor is attached to the goods in order to protect the latter from theft from the trading floor. Devices vary in size and shape. A “peeping” sensor is a protective clip, which is a plastic case, inside of which there is a mechanical system. It can have a different structure, for example, in the form of a steel rod mounted between two metal balls on springs.
The principle of operation of the magnetic tag remover consists in the formation of a powerful directional impulse that takes the steel balls in different directions and takes out the main rod. As a result of exposure, the protective clip of the sensor is opened and it can be removed from the goods without mechanical damage.
The use of magnetic pullers
The main area of use of such devices is trade. Sellers use them to deactivate sensors that protect the goods from theft. Less commonly, a magnetic clip puller is used in everyday life. With it, you can create a system based on a magnetic lock, as some car owners protect the headlights of the car from theft.