Surface Mount H.264 JPEG WDR 24VAC/DC Aluminum 26W 4 x 3 MP (12 MP) 1/3in. Progressive scan sensor. Each lens is a 3 MP 2.8-8mm remote zoom and focus lens. External microphone and speaker support for two-way audio. External I/O interface for connecting alarms and relays. Automatic removable IR cut filter for IR sensitivity at night