2.8in Smart Electronic Door Viewer Security Peephole Camera High Definition Set
Item Type: Digital Door Viewer. Easy Installation: Easy to install, applicable door hole is approx 14‑22mm/0.55‑0.87in, applicable door thickness is approx 35‑120mm/1.38‑4.72in. Applicable Door Hole: Approx.14-22mm/0.55‑0.87in.