Sigtronics Transcom II. Condition is "Used". We removed this from our 1963 Cessna 172. We upgraded the radio/intercom system and no longer need this. It takes a 9V battery. Tested and working condition. No 9V battery included. Note: this device is to add 2 places to other Sigtronics intercoms. Please message me any questions. A huge savings from buying new! Best deal on eBay. Buy it now!