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Internet Of Things - Interview Questions
How does Z-Wave work?
Z-Wave is a wireless radio frequency technology which operates at 908.42 MHz (in the US & Canada) that lets smart devices talk to and connect with one another. Household products, like lights, door locks and thermostats are made “smart” when Z-Wave connectivity is added inside the product’s design, giving them the capability to communicate and perform the desired functions that you want.
 
Z-Wave operates wirelessly and securely. The devices can be easily accessed and controlled remotely on your smartphone, tablet or computer so you can control your smart home from anywhere in the world! The Z-Wave hub receives a command from you via your smartphone, tablet, or computer and routes the command to the destination device.
 
For example, you want to close your garage door. You select that option on the app via your smartphone. No matter where you are in the world and as long as you have internet access, the hub will receive that command and send the command from device to device until it reaches the garage door controller. The smart garage door controller will then close. Once it has closed, it will send a notification back through the devices, to the smart hub, providing you with a notification on your smartphone that the garage door was in fact closed. Z-Wave devices have 2-way communication built in. All of this happens wirelessly without any interruption in your home and no interruption from your Wi-Fi network.
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