Atomic Clock With Indoor Outdoor Temperature › Customer reviews

This is our second watch. We also bought gifts for my son and friends. My only objection is that it is difficult to reset them (indoor or outdoor batteries) when you need to replace batteries. But his good news is that the battery lasts long ... about a year. Since the outdoor sensor has stopped functioning even after replacing the battery, we replaced the first watch in the last three years. The new sensor and clock are on the 2nd floor, now the old watch is on the second floor ... All are working on the second floor of the sensor. The watch itself is large and easy to read, it displays date and time, time, indoor and outdoor temperature, and is very accurate. We like this watch. Outdoor temperature is very important to us as we live in very cold weather and very hot weather. It is a wonderful clock. I strongly recommend it! And rational

Editor's comment: After a few months the outside temperature has stopped working. Please replace the battery. It is not functioning properly yet. It corroded in a distant thing, it does not work at all

It is still a good watch ... but if you want it to be suitable for outdoor temperatures and if you live in rain or rain, it may not work in protected areas.

Initial review: I love atomic clocks, this is a good one. You can see it in the room. That is also temporary. The service is packed and packed fast. Thank you very much.

LPWAN outdoor positioning solution depends on GPS. It is suitable for outdoor activities, but it is not suitable for indoor environment. Although LPWAN can be used for indoor detection applications (such as sensor temperature of walk-in refrigerator), it may be used, but new LPWAN networks and new LPWAN networks (such as Mike's laptops) are accurate indoors There is no position. ) Agreement Note: At this time, real-time trilateration can not be performed on a network stack such as LoRaWAN. Therefore, GPS is a common way to achieve real-time outdoor positioning accuracy between LPWAN.

Importance: In addition to open doors, windows and vents, air flows through small cracks and openings (infiltration of air) in the building, so indoor and outdoor air are constantly mixing. Due to the wind effect and the temperature difference between indoor and outdoor air, pneumatic or air exchange is driven by air pressure difference. The more air exchanges, the more similar the composition of indoor and outdoor air. When the air exchange rate is low, the influence of pollution sources inside the room worsens, and outdoor pollution also decreases at the same time. If the average temperature of the outdoor air rises due to climate change and the indoor air continues to maintain the same comfort temperature, the penetration due to the temperature difference will also change and the exposure of indoor and outdoor air pollution sources will change.

Indoor pollution sources that emit gases and particles into the atmosphere are the main causes of indoor air quality problems. Insufficient ventilation will not introduce enough ambient air to dilute the emissions of indoor pollutants and will raise the level of pollutants in the room as the pollutants in the room will not be brought out of the area. High temperature and high humidity also increase the concentration of certain pollutants. The relative importance of a single source depends on how much specific pollutants are emitted and how harmful they are. In some cases factors such as the age of the source and proper maintenance are important. For example, an improperly adjusted gas stove may release more carbon monoxide than a properly tuned gas stove.