Features: Accurate calibration in less than a minute. Can be calibrated for mph, kph, or knots. Odometers accurately tally miles, kilometers, or nautical miles. Works on all pulsed electric speedometers. Easy installation.  Uses as few as 3 wires to operate. No switches to set or pots to turn. Stylish, compact enclosure; easy to mount. Dimensions: 3.1"L x 2.1"W x 1"H. Bi-color LED for operational feedback.

• Multi-function output can provide one of two optional features, which include:
• a complimentary speed signal output, perfect for driving a tachograph or a second speedometer.
• a alternative ignition power source, providing automatically switched battery voltage based on the motion of the vehicle.  Good for vehicles that don't have an easily accessible ignition power wire.

• Calibratable over-speed warning output provides switched battery voltage in the event of overspeeding. Great for driving a warning lamp or switching a relay.  Speed limit calibration utilizes the same easy to use calibration routine as when calibrating the Sky Drive® to your speedometer.

• Both the alternative ignition and over-speed warning wires are capable of driving a load up to 1.2 amps.
  

Sky Drive® Calibration Procedure:

• Ensure the Sky Drive® is connected to the speedometer it is being calibrated for, and is powered on.
• Press and hold the calibration button until the speedometer pointer begins to rise (about 5 seconds).
• Continue holding the calibration button until the pointer begins approaching 50mph (80kph).
• Release the calibration button and begin tapping it for fine adjustment.
• Once the pointer reads as close as possible to 50mph (80kph), release the calibration button for 5 seconds. The pointer will return to zero. The Sky Drive® has now been calibrated.
• If you pass the target speed, simply allow the pointer to return to zero and try again. There is no limit to the number of times the Sky Drive® can be calibrated.