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Each time we update our reviews, we also update our scores based on how customers currently perceive the products. We do this by extensively researching user reviews at retailers such as Amazon, Best Buy, Home Depot and Lowe's. When we test, we borrow some of the DIY security systems from their manufacturers and buy others. Although we may reach out for technical support or for clarification on a particular feature, the companies have no input on our testing practices and we don’t share our results or rankings with them before publishing our reviews. As we researched this topic and security systems in general, we reached out to Jamie Vos, vice president of the Electronic Security Association ESA for his thoughts on DIY systems. He emphasized professional monitoring for security systems: “If you receive a text alert, you may not be in a condition to respond and you may not hear an alarm.

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For example, smaller components such as door/window sensors typically use Z Wave or Zigbee technology because they don't require a lot of power and can be powered by smaller batteries. They also operate in a mesh topology and can help extend the range of networked devices. However, neither protocol provides the bandwidth that you get with Wi Fi, which is why it is usually used in security cameras to provide smooth video streaming, and in other devices that require a fat pipe. Moreover, Z Wave and Zigbee devices are connected and controlled using a hub, while Wi Fi devices can be connected directly to your home network and controlled with an app. Finally, Z Wave and Zigbee devices use AES 128 encryption, and since they operate in a closed system with a dedicated hub, they offer more security than Wi Fi devices. Any smart security system worth its salt offers components that work together in a seamless environment and can be manipulated using customized rules.