Sharp HD video. Works with Amazon Alexa and Google Assistant. Cons: Setup requires working with electrical wiring. Must have existing chime box. Need Nest Aware subscription for many features. Bottom Line: The Nest Hello video doorbell not only lets you know when somebody is at your door, it uses face recognition to tell you exactly who it is. Read ReviewRing Video Doorbell 2 ReviewMSRP: $199. 00 at Pros: Easy to install. Battery or wired power operation. 1080p video. Alexa and IFTTT support.

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Although it would be difficult to design and produce your own security system and successfully market it, there are companies who can sell you a private label security system you can market under your company’s name.

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If you live in a small apartment and want to keep tabs on things when you're not home, a security camera can get the job done for a lot less money than what you'll pay for a full security system.

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