2.1MM Lens, super wide angle, Horizontal: 135° ; Vertical: 75° ; Diagonal: 156°. Buit in MIC,Two way audio, built-in POE.

2.1MM Lens, super wide angle, Horizontal: 135° ; Vertical: 75° ; Diagonal: 156°. Compatible with with Hikvision protocol, plug and play with Hikvision NVR.