Accutrack II 310-U Speedometer
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Programmable for N or HO, this unit stands over any track, and displays the speed of a train as it passes, in either direction. It is a stand-alone device, and runs off two AAA batteries, included in the package, so is ideal for DC or DCC layouts. The speedometer uses the precision of a microcontroller to measure the time between two infrared beams that the train passes through. Based on this time, the scale speed can be calculated from a mathematically derived calibration factor. Built into the software are the calibration factors for N & HO scales, and these factors are selectable from a button accessible from the front panel of the device. Speed is displayed for 5 seconds and then unit goes into power saving mode. Auto shut off after 5 minutes of no trains. Features configurable for: HO scale OO scale N scale (1:160) N scale (1:148) configurable speed measurement for MPH or KPH speed increments of 0.1 MPH/KPH when less than 10 MPH/KPH speed increments of 1 MPH/KPH when 10 MPH/KPH or over height clearance sufficient for HO AutoMax and double-stack high box container cars configurable auto-off battery saver for 1 to 30 minutes since last speed measurement