Dahua 4MP IPC-HDW2441T-S IR Fixed-focal Eyeball WizSense IP Camera Built in Mic
Focal Length. > Supports max. 256 G Micro SD card; built in MIC. Built-in MIC. > Built-in IR LED, and the max. illumination distance is 30 m. 30 m (98.43 ft) (IR LED). (ICR + H.265 + max. ).