Securityman DigiairWatch2 4-Channel Wireless DVR with 2 Wireless Camera, Night Vision, Audio and SD Card Recorder (Black) Do-it-yourself (D.I.Y) easy to use and simple installation Integrated digital video recorder, SD memory card not included 2.4GHz digital wireless recording system. No video cables required Weatherproof (IP54) CMOS color camera for outdoor and indoor applications Secure signal: neighbors cannot pick up the signal or listen in