The Wyze cameras are inexpensive; allows you to save to the cloud (internet) 12 second video clips (when motion is detected) for up to 2 weeks at no cost; can record continuously to an SD card (you would have to buy the SD card); are managed, viewed and controlled from your mobile device (i.e. smartphone); and are Alexa and Google Assistant ready.
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Source: Amazon – Wyze Cam 1080p HD Indoor WiFi Smart Home Camera with Night Vision