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(Pocket-lint) - Earlier this year Ring debuted a mega cheap way to get one of its doorbells by launching an entry-level wired version called Ring Video Doorbell Wired, and it's now on offer this Black Friday.

Save 30% on Ring Video Doorbell Wired

As its name suggests, this product requires you to have existing doorbell wiring. The biggest benefit of having no internal battery is that is pretty slim yet is still capable of Full HD 1080p video. However, there's no 5GHz Wi-Fi support - just 2.4GHz - unlike the Ring Video Doorbell 3, 3 Plus and Doorbell 4. 

Ring Video Doorbell Wired is essentially a much cheaper version of the also-wired Ring Video Doorbell Pro but capable of many of the same things. 

Again it features real-time alerts, live video and two-way talk plus full integration with the Ring app. As with other Ring products you need to take out a Ring Protect subscription which will also enable you to use Pre-Roll to see what triggered your alerts. And you'll probably need a Ring Chime for audible alerts in your home. 

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If you have existing doorbell wiring it's a total no-brainer.

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Writing by Rob Kerr. Editing by Adrian Willings.