https://v.youku.com/v_show/id_XNDYxMDYzMTU0OA==.html
You can view the video introduction of this system through the above link. If you have any questions or want to apply this system, please contact us, email: liuzihua@duotel.cn
duotel COVID-19 Epidemic prevention and control system
duotel invented an NB-IoT smart card, SOS by one-click, via movement / prolonged rest intelligent perception principle, the card can be wearable to accuracy positioning or paste on door for isolation.
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