Mini Universal GPS Speed Sender GPS Speed Sender (Mini Size, Universal Type) 1. Application: AlI kinds of Speedometer, Tachograph - High Accuracy only 0. 2% deviation (mechanical speed sensor will be 3~5% deviation) - Anti-GPS Stationary Drift technology. - Support both Negative & Positive Pulse output with Max 50,000pules/km - Compatible with different gauges with programmable speed ratio and lowest 0.5km/h speed to start. - Output two speed signals which are reverse - Shockproof and Circuit Protection design - Pulse/Odometer Compensation when in Tunnel or under Bridge Default Speed Ratio: 5000ppk (5000 pulses per km) - High quality GPS Active Antenna which performs well in windy or heavy rainy weather. - Mini Size: 4. 5cm(L)x1.9cm(W), 100cm extended cable - DC12V/24V Power Supply (6- 36V DC) How does it work? - GPS Odometer Speed Sender provides a reliable calibration-free replacement for mechanical speed senders. - Using data received from the Global Positioning Satellite network, the GPS Speed Sender calculates three-dimensional ground speed and provides a pulsed output compatible with existing mechanical speed senders. - This high-technology solution eradicates the dependency on vehicle specific parameters thereby reducing installation time and eradicating the need for periodic calibration. Cable Definition: - RED: Power +, DC8~32V - BLACK: GROUND - GREEN: Speed Pulse Signal Output + - BIUE: Speed Pulse Signal Output- Please connect GREEN or BLUE cable (one of the two) to your current Speedometer/odometer/tachograph. Package: As Picture Show