Mini Universal GPS Speed SenderGPS 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 - suitable for 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)Product LED light status: Red flashing not positioned Green flashing positioning successful with vehicle speed Always green, successful positioning without vehicle speedCable 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 the picture shows)1 x Speedometer Sensor Adapter OR 1 X GPS Antenna OR 1 X GPS Antenna + AdapterWholesale and Drop shipping- For wholesale, we will offer the discount or free express shipping which only takes 3-7 days to arrive. - For drop shipping, We could send the goods to your customers directly and won t leave information about us if youd like to.