LCD Screen: 7" 800x480; Audio Input: All-direction Microphone; Audio Output: Built-in Loudspeaker; Bidirectional Talk: Support Dual-way Bidirectional talk; Alarm In: 6; Alarm Out: 1; RS485: 1; Memory Slot: Micro SD, Max 32GB; Power: DC 12V/ supply directly by VTNS1060Aen