SAC7-35 batteries PS Engineering's PM-1200 is a

PS Engineering's PM-1200 is a two place panel mount intercom designed for the loudest of aircraft

and informative commentary

Patented flex/wire boom with M-101 Dynamic Microphone

Any entertainment device connected through the PMA4000 must be switched off during take off and landing

cassette player or AM / FM receiver

SAC7-35 batteries PS Engineering's PM-1200 is aProviding four functions in one small, easy to install unit, the SAC7 35 is the perfect system to enhance the new generation of avionics systems. FAA certified altitude encoder with both Grey code and RS 232 data. Exclusive Altitude Inflight Monitoring that alerts the pilot anytime there is a deviation of more than 100ft from selected altitude. Fuel Flow computer (flow transducers additional). Airdata computer with multiple interface formats.