How long does it take to open the door by isolating the door magnet?

About 30 seconds. "Little Door God" is actually an intelligent door magnetic sensor. Once the isolated object in the home opens the door, the background system will issue an "alarm", and the epidemic prevention dynamic monitoring system will receive a prompt at the first time, which will ring for about 30 seconds and be installed in front of the isolated person in the home. The purpose is that once the isolated person goes out, an alarm will be issued to remind the township and village cadres to deal with it as soon as possible.