Reads your Altitude Encoder and displays your current altitude as seen by ATC. Display indicates when your current altitude is above or below your Programmed Assigned Altitude. A "Level off Alarm" occurs as you approach your Programmed Assigned Altitude. A "Deviation Alarm" occurs if you deviate from your Assigned Altitude. A Programmed Approach Altitude may be set to alert you when you have reached MDA, DH, Pattern Altitude, Wheels Down Altitude or any Altitude for which you wish to set an alert. Displays Density Altitude based on your current OAT reading. Displays OAT. May be toggled between degrees F and degrees C. A Programmable Timer may be set as an "UP" or "Down" counting timer. The "UP" Timer will start automatically when your current altitude reaches 300 feet above the ground. A Recurring Alarm may be set to alert you at appropriate time intervals. Example: If the alarm is set for 30 minutes, you will get an alarm at 30 minutes, 60 minutes, 90 minutes, etc. This alarm can be used to remind you to check your fuel level, engine instruments, course, etc., at set time intervals. The "Down" Timer may be used to time approaches or turns or as a reminder at a set interval. The "UP" Timer will continue to run in the background when the "Down" Timer is selected. Displays Local and Zulu Time. The Local Clock may be set to display in a 12 or 24-hour format. Meets FAA requirements for a clock. Specifications: 2 1/4" Mount. 3.65" Depth. 10 Oz. Unit. Viewable in direct sunlight. Backlit for night operation. Backlights and LED's are dimmable. Operates from 7.5 to 35 volts at .3 amps.