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EZVIZ CB3 Wireless Battery-Powered Security Camera Outdoor, Smart Human Motion Detection, Color Night Vision, 1080p, Weatherproof, Two-Way Talk, H.265£37.99
It runs steadily up to 120 days on one full battery charge, and can basically go anywhere near your home without complex wiring or expensive installation fees. It is a go to, accessible option for any family that needs an extra layer of protection.