... free remote control distance2,With micro-processing technology, auto-remote control, excellent performance and high reliability3,3.5" TFT color display4, ... , unlock signal, intercom state signal10,Also Lithium battery design of outdoor camera, in power saving mode, call ... FCC/R&NTTE18,Ultra short built-in antenna design, beautiful appearance and novelStandard configuration: 2 unit Indoor monitor+1 ...