Two-in-one peephole video with door bell.Automatically stores the Visitor History once visitors pressed the doorbell.With night vision function, automatically open infrared lights in the dark.0.3MP Camera with a large field of view (65 degree).Latest tamper alarm function,To prevent anti-spy and protect your privacy.Easy installation,Advanced power management, no radiation and low power consumption.Visual and doorbell plus camera tamper alarmLCD Screen: 2.8-inch LCDLow power consumptionTamper alarm3 x digital zoom30W HD pixel CMOS sensor. AAA battery-powered, automatic power saving mode, the battery low reminderHost Size: 109x96x16mm cat head size: Φ50 * 10mmSuitable door thickness 35 - 90 mm, 12-50mm diameter hole door