Ring Peephole Cam (Battery-Powered Full HD Video Doorbell) — NEW In Box
Ring peephole cam is compatible with standard size peepholes 12 mm to 14 mm (0.47 in to 0.55 in), and door thickness ranging from 34 mm to 55 mm (1.3 in to 2.2 in). Get alerts on your phone, tablet, or PC when anyone knocks on your door, presses the doorbell button, or triggers the motion sensors.