A single push-button on Model 303 causes the digital display in automatic rotation to show its three functions of: voltage, outside air temperature (Fahrenheit), outside air temperature (Centigrade). When the radio master switch of the aircraft is first turned on, The Model 303 always readsout the aircraft voltage to the nearest tenth of a volt. A code letter E indicates it is in the voltage function (EMF). To display outside air temperature in degrees Fahrenheit, the button is pressed, and the letter F appears to indicate this mode. The next press of the button displays C for outside temperature in degrees Centigrade.
The M475VA and, the M475VAA were designed for low current drain and are also used in standby and emergency battery packs, Note - Shunts can be remoted (special order) . Extreme care must be taken to fuse wire when using remote shunts. Model M485VA ls made primarily for remote shunts.
Instruments - Voltmeters - Davtron
