<https://pilotshop.co.nz/products/rugged-air-rrp2ex-2-place-expandable-general-aviation-pilot-intercom>
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"The RRP2EX 2-person aviation intercom offers simple and affordable communication between pilot, co-pilot, or passengers.\nWith the ability to listen to music, adjust volume, and squelch, you can dial in your audio experience for the most enjoyable flight ever.\nOperates on (2) 9V Batteries (not included). Should you ever be lacking a battery, the RRP2EX also operates off the included cigarette power adaptor, so you'll never be without power for transmission.\nThe record in/out port allows you to connect a digital recorder so you can record your audio — a great tool for instructors and students.\nThe 'Pilot Isolate' feature allows the pilot to isolate all conversation to just the pilot and ATC for clear and uninterrupted conversation.\nThe design of the RRP2EX offers Pilot-Only 'Transmission Protection', meaning if there's ever an in-flight power-loss, the RRP2EX will still transmit - even without power.\nAlso included is Rugged's #CS-MUSIC stereo music cord to connect an iPod, iPhone, or other standard MP3 player with a 3.5mm jack for audio enjoyment.\nFeatures:\nRecord in/outMusic input jackIsolation/All switchPush-to-Talk (PTT)Volume controlSquelchOptional expansion cable allows you to connect up to 4 peopleIn The Box:\nRRP2EX IntercomCigarette Power Adapter3.5mm stereo music cable"
<https://pilotshop.co.nz/products/rugged-air-rrp2ex-2-place-expandable-general-aviation-pilot-intercom>