> Up to 1080P HD video talk with 140° horizontal angle
> IR powered night vision
> PIR detection with 3 configurable zones
> Work with existing mechanical/electronic chime, or DS11
> Easy installation(Wi-Fi), wide voltage power supply
> Cloud talk, cloud storage

For more information:
https://us.dahuasecurity.com/wp-content/uploads/2019/11/DHI_DB11_VideoDoorbell_Quick_Installation_Guide_v2.pdf