License-free UHF/FM Transceiver DJPX31S ALINCO

With the disconnection detective function, it informs disconnection of earphones.Transceiver dedicated for earphone microphone that works with on AA dry battery.There are only a power supply and sound volume adjustment on the surface, incorrect operations are prevented.The built-in tail noise canceller cuts noises at the end of receiving.Color:SilverW x D x H (mm):52.8 x 14.6 x 73.8Antenna Length (mm):28Talking distance: Approx. 50 to 100m(city area), approx. 200 to 500m(suburb)Alternate call: 20 channelsRelay call: 27 channels(relay sold separately)Output: 10mWPower supply: Rechargeable (can be used with one AA battery) (battery sold separately)PolycarbonateBelt ClipBattery, charger, and earphone microphone are not included. When using, separately sold earphone microphone is necessary.