SENSOR-1 Population Monitor can monitor up to 24-row drops. It is designed to monitor the population and seed flow of your planter or drill. The compact, state-of-the-art design measures 8-½” long, 4-½” wide and only 1-¾” deep and is constructed of lightweight, durable die-cast aluminum. The back-lit LCD screen features an easy-to-read bar graph and numeric digital display that can be set up to display total population, average population, seed spacing (per inch), speed (MPH), travel distance (miles), field or total field acres, and much more. Measurements can be displayed in either English or Metric. The monitor also features a high/low population alarm. Contact information may be stored in this monitor in case of theft or loss.