Brand: Altronics Manufacturer's Part Number: PAE-O2 Part Type: Racing Weather Stations Product Line: Altronics PerformAIRE Eclipse Weather Stations Summit Racing Part Number: ALT-PAE-O2 UPC: 012379001960 Live Weather Data Monitoring: Yes LCD Readout: Yes LCD Displays: Monochrome Backlit: Yes Reads Temperature: Yes Reads Barometric Pressure: Yes Reads Relative Humidity: Yes Reads Dew Point: Yes Reads Density Altitude: Yes Reads Oxygen Altitude: Yes Oxygen Sensor Included: Yes Measures Wind Speed: Yes Wind Direction: No Reads Air Density Ratio: Yes Reads Vapor Pressure: Yes Maximum Number of Stored Runs: 400 Displays ET Predictions: Yes Low Battery Indicator: Yes Predicts Quarter-Mile ETs: Yes Predicts 1/8 Mile ETs: Yes Calculates Sea Level ETs: Yes Displays Throttle Stop Predictions: Yes Calculates Throttle Stop Ratio: Yes Horsepower Correction Feature: Yes Utilizes Run Completion: Yes Number of Separate Databases: 10 Data Transmits to Pager: No Includes Pager: No Power Supply: Rechargeable lithium battery Batteries Included: Yes Quantity: Sold individually. Notes: This weather station also reads grains of water. Weather stations are designed to work within a specified accuracy range， please refer to the weather stations owner’s manual for accuracy tolerances. For best results use the same weather station for all readings. Altronics PerformAIRE Eclipse Weather Stations Altronics PerformAIRE Eclipse weather stations can measure the density of air in the atmosphere. These PerformAIRE computers contain a database that stores runs and then uses this data to automatically predict ETs and throttle stop settings. The predicted values are continually updated with each new sample of air， and the density altitude will be stored with each run. The stored runs are also tagged with a time and date stamp to allow for later referencing. The expandable database is capable of storing hundreds of runs in separate databases， which can be labeled for specific cars or tracks.