Z-Wave is a wireless protocol
Z-Wave is the name of a wireless signal used for communication between a base station and other devices. Z-Wave is a protocol used for various IOT devices. The protocol was developed by a Danish company (Zen-Sys) and is now an open standard. Z-Wave uses a low frequency, which has the advantage that it goes better through walls and obstacles than Wi-Fi or Zigbee. A problem with Z-wave is that not every country has received the same frequency, so a US Z-wave product will not work in Europe. So you can't just order a Z-wave product online without taking it into account. Each Z-wave switch/sensor/controller has an antenna (external or internal), so at a bad range it is often possible to use an extender to boost the signal. Z-Wave is also a mesh network: With this network it is therefore possible that Z-wave modules not only with the controller but also among themselves. It is easy to add new Z-Wave products, and you do not need any professional installation or special wiring which often makes other systems expensive. For more information or purchase Z-wave products, take a look at Momotica Https://www.youtube.com/watch?v=ZflZvFM-nlM