Because It will rise beep beep voice for couple seconds when over the speed that you had set (default speed:150km/h) Description: 1.Environment temperature: - 40 °C- +120 °C Barometric press:86-106KPa Relative humidity:10%-95% Environment voice:<60dB 2.Work voltage:11V~18Vdc(12Vdc/200mA)3.Sleep current:<30mA 4.Display way:Virtual image reflection 5.Display channel :LED Display 6.Reflector transmittance: 98% Package Included: 1 x HUD 1 x Cable for OBD 1 x Cable for GPS 1 x Reflective Film 1 x 3M Stickers 1 x English User Manua COMPATIBLE ATTENTION: OBDll only be available for vehicles produced after 2008. GPS MODEL Perfect Suitable for All Vehicle. Dual System, Change free. WHAT's the Difference Between GPS and OBDII? 1. GPS works for all vehicles, but it doesn't show as much data as OBDII. 2. OBDII has more powerful features and data, but is only suitable for vehicles produced after 2008. Conversion between GPS and OBDII: 1.GPS system: after power on, GPS light flickers, press "+" button within 5 seconds to switch OBD system 2.OBD system: after power on, OBD light flickers, press "+" button within 5 seconds to switch GPS system ATTENTION: 1.Please tear off the protective film before using this product, otherwise it will affect the clarity of the projection(If it is in direct sunlight, the clarity will be a little weak, after all, this is LED display on transparent glass). 2.Because the car's glass is double glazed, the device will have slight ghosting, but it will not affect the use. If the reflective film (contained in the package) is used, the slight ghosting will not occur. 3.If you are plugging OBD cable, please adjust the voltage to 12.8. If you use GPS mode, you can plug cigarette lighter with USB cable
Trustpilot
1 week ago
2 months ago