M-Series Operator's Manual
Model M2850, 28-Volt 50-Amp Mini-GPU
IMPORTANT DISCLAIMERS & LIABILITY LIMITATIONS
As a condition for use, Audio Authority Corp. authorizes this device for use ONLY by aviation
professionals, such as licensed pilots and maintenance technicians, knowledgeable about the
aircraft's electrical system and batteries. The concepts, recommendations, and instructions in this
manual are necessarily general and make assumptions that may not apply to your aircraft. Therefore,
incorrect use of this device has the potential to damage the GPU and/or aircraft components.
The device is designed exclusively for aircraft with a 28VDC electrical system, a 24V battery, and a
factory-installed external power receptacle for a 3-pin oval AN2551 (NATO) plug.
It is the operator's sole responsibility to read completely and fully understand this manual, plus all
available documentation on their aircraft's electrical system design, to properly determine the
appropriate use of this, or any, external power source. If you cannot do this, do not use this
product. Instead, consult a qualified technician familiar with your specific aircraft type and
configuration before connecting the GPU to your aircraft, or return it to the seller before using.