... in free field up to 300 meters;5, 1GB memory card, 12 ringing tones for option;6, Support up to 2 ... clear intercom;8, 1GB memory card, take and store image and video automatically;9, Indoor monitor can call and intercom with each other, up ... , Lithium battery, USB line for indoor monitor, Memory card, English user manual; Guarantee card, Inspect certificateCertificateComplies 2006/95/EC, FCC Part15, TB ...