The attributes of the communication protocols themselves determine their application scenarios.
Wi-Fi: Advantages: The most popular, the most acceptable, and the amount of transmitted data is relatively large. Disadvantages: It is also obvious that it relies on network and power resources, and consumes a lot of energy. Once the network and power are cut off, the smart home cannot be used. Of course, the cost of the Wi-Fi module is relatively high.
Zigbee: Advantages: The biggest advantage is that it can self-organize the network when the network is disconnected. Smart home devices can still be used. This is what we feel the most, and the delay is small and the stability is relatively good. As for the low energy consumption, we don’t feel strongly about it. In fact, we don’t feel strongly about changing the battery once a year or once every three years.
Disadvantages: The data transmission bandwidth of the zigbee protocol is relatively small, and the wall penetration is not good. Modules cost more than Bluetooth.
Bluetooth mesh: Advantages: low cost and high popularity. This song is enough for it.
Disadvantages: It is bandwidth and stability. However, Bluetooth mesh has been developed for such a long time, and its stability is still possible with the support of multiple gateways. These three protocols are still the mainstream communication protocols for smart homes. If you do it yourself, the best way is to use them all. For large plug-in devices, buy a Wi-Fi protocol