Special Features
Human Motion Tracking, NIGHT VISION, Vandal-proof, Motion Detection, Built-in Siren, PAN-TILT, Two-way Audio, One-way Audio, Low Power
Function
Two-way Audio, Alarm I/O, RESET, Built-in Mic, NIGHT VISION, Wide Angle
Customized support
Online technical support, Customized logo, OEM, ODM