Davtron M803 Digital Clock w/LCD Display (28V)

[Music] the ma toll-free digital clock can display outside air temperature or voltage and either universal time local time flight time or elapsed time to cycle between oil T in Celsius voltage and Oh a T in Fahrenheit press the button [Music] the electrical system of a Cessna 172 is powered by a 28 volts engine driven alternator and a 24 volt battery the select button selects what is displayed and the control button controls what is being displayed to cycle universal time local time flight time and elapsed time press select flight time starts when the battery is switched on to reset flight time select F T and press control [Music] flight time is normally set before takeoff to start elapsed time select ET and press control [Music] pressing ctrl again stop Ct the next press of control reset CT to zero [Music]