On B&H Photo where you can now get this Ring 的视屏门铃 Ring Video Doorbell Pro
for only $149 (regularly $249)!
The Ring Video Doorbell Pro features 1080HD video, two-way audio and customizable motion sensors, custom motion zones, 160° field of view and infrared night vision. It operates in -5° to 120°F temperatures and also includes four interchangeable faceplates so it matches your existing hardware.
You’ll get alerts when motion is detected and you can even speak with visitors remotely! This system connects through existing doorbell wiring so there are no batteries to change.