How to select human body sensor?

　　The function of the human body sensor is mainly used for intelligent linkage with other smart home hardware to realize automation by sensing human motion. Therefore, the key is to consider the detection range, reaction speed and, of course, the cost of use.

　　At present, both our generation and Aqara are connected to Zigbee gateway, while our generation II and LinkedIn are connected to Bluetooth gateway. Which one is better? In terms of reaction speed alone, it must be Zigbee's. Taking the previous collapse of our server as an example, Zigbee's local linkage has no impact at all. However, at present, we mainly promote the Bluetooth Mesh gateway. It is true that the cost of Bluetooth Mesh is cheaper. And I believe that with the improvement of technology, there is still much room for improvement in stability and reaction speed.

　　There is also the detection angle and distance. The second generation of our human body sensor is 130 °, and the detection distance is 7 meters; The detection angle of Aqara human body sensor is 170 °, and the maximum detection distance is 7 meters; The detection angle of LinkedIn human body sensor is 120 °, and the detection distance is 8m.

　　Therefore, when choosing a gateway, you can depend on what kind of gateway your home is. In addition, it is the actual size of the space used. If the space is relatively large, it is recommended to use LinkedIn, which has a longer detection distance. The relatively small space like the bathroom, is good.

　　Of course, in terms of cost, the current cost performance ratio is relatively high, which is our 2nd generation human body sensor and LinkedIn human body sensor. After all, they are all about 50 yuan, especially LinkedIn.

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