Ultimate9 Codebreaker OBD2 HUD Heads up! Keep eyes on the road thanks to the Codebreaker OBD2 HUD system. Details: Codebreaker Head Up Display systems, HUD, assist in monitoring vital parameters, such as speed, by projecting information onto a reflective pad, placed by the user in a convenient spot on the windscreen. With the information displayed higher up, it is easier to concentrate on the road ahead. Compatible with OBD2/EOBD compliant vehicles (most vehicles manufactured in AU & NZ since 2007). Features: Speedometer Scan Tool RPM Meter & Alarm Over Speed Meter & Alarm Water Temp. Meter & Alarm Voltage Meter & Alarm Fatigue Driving Reminder Auto & Manual Adjusting Brightness Speedometer - The speedometer function projects the vehicle's speed and features an adjustment range of 50-150 to calibrate the system against a corrected GPS value. Scan Tool - Clear trouble codes. RPM Meter - Acting as a tachometer, the RPM function projects the car's revs onto the supplied reflective film. Water Temp Meter - The Water Temp. function presents the readout numerically instead of the traditional quartered gauge, providing a more accurate read on vehicle vitals. Voltage Meter - The Voltage function offers quick access to monitor a battery's health. Alarms - Set alarms to notify you when limits are exceeded for vehicle Speed, RPM, Water Temp., and Voltage. Adjustable Brightness - OBD2 HUD features a light sensor to either automatically adjust projection visibility, depending on the environment, or manually adjust brightness at user discretion. Product Documents: Codebreaker OBD2 HUD - Quick Start Guide