Sony SNC-RZ25N MPEG-4/JPEG Network Camera with PTZ Capability, 18x Zoom Power requirements: DC 12 V or AC 24V Selectable MPEG-4 or JPEG Compression Formats Bi-Directional Audio External microphone input: Mini-jack, 2.4 V DC plug-in power, 4.7 K&#937; "Day/Night" Function