| Increasing the living standard, in addition to taking care | | | | doors) with wave has about 12m away. Meanwhile, |
| to dress, transport, people also particularly interested in | | | | the market flooded with cheap equipment in China or |
| security for the family. Anti-theft or Burglar Alarm | | | | Taiwan. Prices for these devices ranges from |
| Devices so quickly to the throne with an increasing | | | | 36$-140$. These devices often include the 1-4 range |
| beside the other security system such as: wireless | | | | scans are scanned from the 6-12m, a central control |
| driveway alarm system, wireless door way alarm,... | | | | device. |
| According to Mrs. Maika, owner of a shop selling | | | | Most devices can alert the horn, flashing lights and |
| anti-theft devices on the Sheldon Street, Saint Paul, | | | | alarm over the phone. The sensors are attached to |
| U.S, recently, her store was visited regularly to explore | | | | places such as around doors, windows, crooks will |
| and recommend installing anti-theft device for their | | | | detect intruders and protect the central processor. This |
| homes, especially the gold robbery recently | | | | department not only cause whistle, flashing lights but |
| According to some experts in this field, anti-theft | | | | also automatically notify the landlord by the default |
| devices attached switch from using probes wired | | | | phone. |
| throughout the relatively expensive, had “made rain | | | | However, for some low-cost sensor is difficult to |
| as the wind” on the market has become obsolete | | | | distinguish where the stranger intrusions, where the |
| because stability but rather the inconvenience of the | | | | animals or moving objects, that leading to false alarms. |
| installation. Using the camera is not effective, easy to | | | | In addition, these devices are not expert rated both |
| be detected and disabled. Now a series of wireless | | | | durability and accuracy, but the price should be easy to |
| devices using waves and sensors are being interested | | | | accept by the people looking to buy. |
| in. | | | | In short, it can be said that the protective devices are |
| Average equipments will be in Japan for 120$-130$ per | | | | really becoming “guards” trusted for many |
| set (including a first infrared and 2 switch from fitting | | | | middle-class family. |