Double Technology Product Features: Intelligent power-free wiring GPS optimization company, to extend battery usage time built-U-BLUX seventh-generation high-precision GPS chipset fully proprietary A-GPS positioning to speed up transmission speed dual-mode GSM and GPS dual positioning design GPS and LBS multiple strategies to suppress static drift GPS blind can still locate the full support of SMS query and control the operation of the product features: real-time location off the external power supply built-in super lithium battery detection support Chinese mobile phone location query ignition, flame detection (ACC) Built-in mileage statistics, more precise communication blind reissue features that make the track more continuous up to 20,000 points a remote power off the oil, all the metal entity will be on the GPS signal shielding, please note that the car containing the metal coating film will have a shielding effect on GPS . Heavy volume of non-metallic objects will have an impact on manufacturers of GPS-free wiring Star Search, a few centimeters thick wood will be completely shielded GPS signals. Even the next bus will affect the GPS signal 2, glass and plastic for the GPS signal will produce mild attenuation-free wiring GPS, so the GPS on the car windshield or the following travel tourism in pocket will not search Positioning have much impact. 3, in the city, viaduct, outdoor billboards and other visual angle of 45 ° above the building; outdoors, towering canopy, continuous mountain, will have an impact on the GPS satellite signals. In actual, the impact of the water seems to be the most obvious and most immediate, and the impact viaduct and car glass film is much smaller than imagined so serious. And also from the human hand is to reduce the accuracy, because the GPS system is the property of the US military GPS-free wiring how much money will be free to reduce civilian signal accuracy when necessary, or completely shielded, so that the absolute Most of the daily use of the environment affected by most of us from the weather. Free wired GPS manufacturing company | free wired GPS | GPS-free wiring where the sale is provided by Electronic Technology Co., Ltd., Zhengzhou Double. Double Electronic Technology Co., Ltd., Zhengzhou (www.zzgprs.com) strong, credible, in Zhengzhou, Henan Province of GPS systems and other industries has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Double electronic and you hand into the brilliant, for a better future!