Compatibility: Interphone installation - DAHUA ; Shield: 7 " TFT-LCD color matrix ; Resolution: 1024 x 600 ; Internal memory: 8 GB ; Main features: Micro SD memory cards up to 32GB support (possible local recording), Bidirectional communication, The ability to automatically take and save photos if you do not answer to the bell button, The ability to record a short video message in the absence of a response to the bell button ; Alarm inputs: 6 ; Alarm outputs: 1 ; Power supply: 12 V DC, 48 V PoE (802.3af) ;