Home security systems don't need every add-on. These are the devices and sensors that don't add much value -- and that can save you money.

The Blink Mini 2 is a feature-rich security camera on sale for $20. Even better: an extra $10 gets you a waterproof adapter.

Smart home sensors and cameras can also tackle tiny threats, providing info and options for handling bugs all on your own.

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Place a camera in the main thoroughfares inside your home to make it difficult for someone to move about undetected. If someone breaks in through a bathroom, bedroom or another unmonitored area, ...