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Z-Wave
— a communication protocol designed specifically for automation and remote control systems. Provides for the transmission of the most simple and short control commands with minimal delays; communication uses a range of up to 1 GHz, making such communication virtually unaffected by Wi-Fi and Bluetooth devices in the vicinity. Another interesting feature of Z-Wave is the use of a MESH topology. The signal from the sensor in such a network can be transmitted to the control device both directly and through any number of intermediate nodes, while the optimal route is determined taking into account the current situation: for example, if one of the nodes on the shortest signal path fails, the information will go to bypass", through other repeaters within reach. However it is worth noting that MESH relaying significantly increases power consumption, so Z-Wave nodes powered by batteries / accumulators do not perform it.