Probe domestic switch needle KG-300K needle head diameter is 3.0mm normally open switch needle 555 and D1, D2, RP, C2 form a monostable timing circuit. When the human body touches the metal piece A, the sensing signal sets 555. When K is set to 1, the function is preset t
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Read moreIoT applications need to consider many factors such as node cost, network cost, battery life, data transfer rate (throughput), latency, mobility, network coverage, and deployment type. It can be said that there is no one technology that satisfies all IoT needs. The two technologies NB-IoT and LoRa
Read more[NetEase Smart News May 21st] What does it take to turn a crazy, disruptive idea into a successful, sustainable business? This is exactly what we want to know in our investigation of CNBC's selection of disruptors (the CEOs and founders of 50 companies). The informatio
Read moreOn May 23, the 2017 Baidu Union Summit with the theme of “Intelligent Revolutionary Ecological Evolution†was held in Chongqing. In the forum session of the summit, Wu Haifeng, Executive Director of Baidu Web Search, gave a keynote speech entitled "Baidu Se
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Read more1. What are the alternate functions? When the main power supply is normally powered, the main power supply is automatically put into operation, and the backup power supply is reserved. When the main power supply fails or loses power, the backup power supply is put in. If the main power supply retu
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