A backup battery in the kit ensures that even in the event of a power failure, the Ring kit will continue to run for up to 24 hours, using your cellular network to keep connected. As mentioned, there is no need for a subscription plan, though there are contract free Ring Protect Plans available, for either $3 or $10 a month, which allow you to store more video using the Ring app, as well as access member benefits and discounts on additional security product purchases. These might be useful if you plan to buy other equipment from Ring, such as its video doorbell, sirens, smoke detectors, cameras, and more. You can sign up for Ring Alarm Security Kit hereImage Credit: CanaryImage credit: Canary2. Canary All in OneThe plug and play approach to home security$49 View at Amazon$69View at Walmart$79. 99View at AmazonSee all prices 6 found?Affordable monthly planSimple setupSingle device less suited to larger homesThose with more modest homes, such as a rented apartment, may want a simpler plug and play solution, such as the Canary All in One which retails for $169.