HT-011310 GPS Speed Input ModuleWe use these sensors on our #26 Time Attack FC and other Haltech powered cars. GPS Speed Input Module Length: 300mm Outputs: 0V to 12V Pulsed Output Suits: Applications that require a digital speed signal Includes: Includes: GPS Speed Input Module & GPS Antenna Matching male DTM 3 Connector and pins Notes: Calibration: 5000ppk (5000 pulses per km), Use with SPI or DPI ECU Inputs, GPS update Rate 10Hz, High Accuracy 0. 3% Deviation, Pulse Compensation