Racepak Drag Racing V300SD Data Recorders are the most common recorders found in Pro Stock, Pro Modified and several Sportsman drag racing classes. The base configuration of the V300SD data recorder is capable of monitoring 6 parameters; Engine RPM, Driveshaft RPM, Accel G, Lateral G and Battery Volts and a 12-volt event. The V300SD data recorder can be expanded to monitor up to 67 channels of data in order to meet most needs, and can sample data up to 1000 times per second. The Datalink Lite software is pre-installed, giving the user the ability to record, download and perform telemetry (real-time) sessions, as well as add or remove new sensors and modules. Using a SD memory card, you can upload several hours of recorded data to your computer, and store several runs prior to uploading the data. Any monitored function can also be displayed in real time on Racepak’s IQ3 or UDX dashes (sold separately). Comes with Just the Racepak no wires.