... .Support 32G SD Card, 64G max 2.DC input 6-48V, 2 years warranty 3.PTZ Control High Definition Rugged ... Output voltage is 12v . Power 2.4WSystemEmbedded full-time multitask control system, support Chinese simplified & EnglishWorking environment Working temperature: -20C ... HDD and SD Card synchronous recording, double data backup (Very Safe)3. Support D1 each Channel, PTZ Control, 3G remote monitoring4 ...