Easy Setup--Plug & Play- USB Power through Vehicle Cigarette Outlet Jack Adapter, No professional installation is required. Display MPH or KM/h - Simple Push Button Set up. Compatible with Any Moving Vehicle, All Cars & Trucks, Golf Car, Mobil Scooter, Boat..Use GPS Signal Guided Calculation, No wiring needed to the VSS (vehicle speed signal). Clear Green Color Vehicle Driving Speed Display, Easy on your eyes. Over Speed Warning Setting (set by user): Alarm Mute Function; 3 seconds alarm beep and keep flash display will keep warning. GPS signal can be disturb or weak by some atmospheric reasons, usually is weak under the trees, high buildings, continuous bridges... all GPS device do have this problem. The GPS HUD Speedometer uses GPS Satellite Signals to determine the true speed of the vehicle. Zero(0)mA Standby current. Input Voltage: 5-12 Vdc; Input Current: 450mA. Can use USB power bank to supply Power also. Working Temperature: -30C to 70C This GPS Speedometer Unit, Receives Satellite Signals uses GPS to determine the speed of the Moving Vehicles (Devices). Calibration is set by all manufacturers to read high to ensure their speedometers to indicate a speed a bit different than the actual speed of the vehicle. Speed Reading Rate of this Unit set: (tested with a passenger vehicle, compared to Dashboard Speedometer, approximate rate below for reference only): 0-1 Mph @ 0 to 30 mph range; 1-2 Mph @ 30 to 60 mph range; 2-3 Mph @ 60 to 90 mph range. Tested speed rate is differ than the factory documented speed error of 1% (Above Company tested numbers are use for reference Only) GPS Signal receiving takes around 1 to 5 minutes Cold Start after installation(Bad weather can affect the positioning time); and warm start around 30 Seconds to 1+ minute while driving.Speed Range 0 to 155 MPH (0 to 250 KM/h) Speed Reading of the Projection on windshield may not be as clear due to LED light and sun interference. GPS Logger: The logger data is stored in memory card.
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