MD41-728, Model MD41 Annunciation Control Unit – 28V, Horizontal, With internal relay
The MD41-728 is a self -contained GPS Annunciation and also Control unit. It combines all the necessary functions required for switching HSI/CDI data inputs between a conventional NAV (VOR) receiver and also the II Morrow Apollo 2001TSO / 2001GPS / 2101 / GX50 / GX60 approach-certified GPS receivers. In addition, the MD41-728 contains several GPS status annunciations used to indicate modes selected by the front panel switches and various inputs from the GPS receiver.
Other features include dual, 16,000-hour lamps used for all annunciations, internally lighted selection switches, automatic photocell dimming, and also built-in annunciation self-test. Lastly, An external annunciation dimming adjustment is provided for balancing low-level light conditions.
Operating Temperature: –55°C to +70°C
Humidity: 95% Non-condensing
Altitude: 0 to 55,000 feet
Vibration: Cat. M and N
Operational Shock: Rigid mounting, 6G operational, 15G crash safety
Current: 0.30 Amps typical
Controls: SBU: Alternate action switch
WLAN: Alternate action switch
Weight: 0.75 lbs
Lastly, Meets RTCA DO-160C environmental specs