M303 – Digital Temperature Gauge

M303 FEATURES

• LIGHT WEIGHT
• 2 1/4 STANDARD MOUNT OR FRONT MOUNT
• AUTOMATIC DIMMING
• MINIATURE REMOTE PROBE
• SUNLIGHT READABLE DISPLAYS
• OUTSIDE AIR TEMPERATURE (°F)
• OUTSIDE AIR TEMPERATURE (°C)
• AIRCRAFT VOLTAGE WITH ALARM
• LASER ENGRAVED FACEPLATE
• FAA-PMA APPROVED

SPECIFICATIONS

• Temperature range: -40°C to +100°C
  -40°F to +212°F
• Operating Temp: -25°C to + 60°C
• Voltage Range: 10 to 32 Volts +/- 0.2 Volts Typ.
• LED with automatic dimming
• Input Voltage: 14 to 28 Volts
• Input Current: 100 mA max.
• Weight: 5 ounces
• Warranty: 1 year

Case size 1.4 inches long, and leave another .5 inch for the wires coming out.  so total length is about 2 inches.

Complete with digital probe

3 FUNCTION INDICATOR

• OUTSIDE AIR TEMPERATURE (°F)
• OUTSIDE AIR TEMPERATURE (°C)
• AIRCRAFT VOLTAGE With ALARM

OPERATION

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 reads out 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 indicator remains in the mode selected as long as aircraft power is on. Any mode can be selected as fast as one can depress the switch. The mode selection will always sequence in the same manner (F C E) as indicated on the instruments face. The digital outside temperature function replaces one of the most difficult-to-read instruments in the cockpit. The pilot may relate to outside air temp. in degrees Fahrenheit, then instantly change the display to degrees Centigrade for aircraft manual input, etc. The voltage function of the indicator allows the pilot to monitor his electrical system precisely. By monitoring the voltage he can anticipate a low voltage condition, unlike a warning light which tells only that this condition has already occurred. Also, the pilot can know with more accuracy the amount of capacity remaining in the battery. The voltage at which a battery is being charged is also of greatest importance, since over-charging can lead to excessive water loss and battery failure. In brief, the voltage function reveals valuable information which helps the pilot obtain more reliable and better service from the electrical system.

INSTALLATION ELIGIBILITY

• Beech 35, A35, B35, C35, D35, E35, F35, G35, H35, J35, K35, M35, N35, 35-33 and 35-A33

Davtron Inc. recommends that you purchase our products through your local avionics shop and have them do your installation. They know how to handle all the log book entries you need for FAA approval.

300 Series includes the 12ft digital probe. If customer request analog probe, contact distributor.

REPLACEMENT PARTS