design

• Desktop or wall mounted
• USB-C can be operated
• There are two AA batteries

A simple device, switchbot meter pro CO2 monitor is always designed with a screen to show current conditions at one location. That screen does not have a backlit, so you can happily put the monitor anywhere and it will not bother you at night. It is a touch plasticisi, and lacks a premium that you can expect at this price.

There is an option to mount on a desk or shelf with this device, using a fold-out stand, or to mount the wall using a hole on the back. I like the latter option, as it removes the device from the way, but it is good to have flexibility.

There is also an alternative to electricity options. For permanent power, a USB-C cable box is included. This cable is a flat ribbon, so it fits the cut-out in the rear, whether you use the switchbot meter pro CO2 monitor in a desktop or wall-mounted mode.

Alternatively, the switchbott meter pro CO2 monitor can be powered by two AA batteries, allowing you to keep the device anywhere.

There is no need to buy anything else for this device, and you can connect it via Bluetooth using the app; However, if you want weather forecast facility for work and remote control, then you will need a compatible switchbot hub within the Bluetooth range.

Facilities and performance

• An external sensor requires an external temperature
• Single button on top does not do much
• Detailed logging in app

In its default position, the switchbott meter pro CO2 monitor uses its onboard sensor to present information about the internal environment. These include per million (PPM) parts provided by NDIR Swiss sensor, which is accurate within +/- 50ppm. There is also a temperature sensor and a hygrometer for humidity.

To guess whether the current conditions are good or not, you have a time on top partitions in green, amber and red parts in good CO2 conditions. As such the CO2 concentrations increase, you can feel tired or get headache, so the indicator is a good way to show when it is time to ventilate the room.

Below is a second time, which works differently. If the temperature and humidity state is ideal, it indicates comfort; Regardless of temperature, if the humidity is low, the bar shows drought; If the humidity is high, the bar shows wet.

Cosherally, if the humidity is at the right level, but it is very hot or too hot, the indicator disappears completely.

By default, the switchbotter is set for the level of ‘human’ comfort, which is a temperature between 18 ° C and 28 ° C and humidity between 30% and 70%. However, you can override these settings with you.

If you connect the switchbot meter Prof. CO2 monitor to a bridge, it will show a live weather forecast in an illustrated form, such as a picture of the sun, clouds or rain clouds. Just make sure that you have set your address properly in the app.

To save battery life, weather forecast is updated only twice a day, once at midnight and once in the afternoon. This is fine for many areas, but if you live somewhere with a very variable season (Cornwall, I’m watching you), it would be better if the update can be set more often.

This should be technically possible, as the temperature update can be replaced (default is every 10 minutes), as the CO2 update (every 30 minutes by default). Funny, the screen shows time over minutes since the previous CO2 update, but not after the final temperature update.

While the CO2 level is interesting, the level of indoor temperature and humility is usually something that you get from other smart devices. In my house, my Tado X The system tells me everything about each room.

More useful, the switchbott meter pro CO2 monitor can be paired with an indoor/outdoor thermo-hygrometer, which is available separately. I like to see the real outdoor temperature where I live, because it is a more accurate way to see what I should wear or is it good to go to the garden and sit.

Once you change the data source, the screen will show exterior temperature and humidity, but the co2 mainly maintains readings.

To reduce things less, there is an option to replace the panel so that it displays a ‘outdoor’ symbol instead of ‘indoor’.

I want to be able to switch between indoor and external temperatures on the touch of a button, but this is not an option. There is a button at the top, but it has only two options: refresh the data, or refresh the data and replace between ° C and ° F.

Using the app you can see more data completely, and the system logs everything. Just note that the app in the app is from the temperature you see and the humidti reading internal sensors; To see external data, you need to look at the wireless sensor separately.

There are also readings for complete humidity, which suggests how much water is actually in the air; The dew point, which changes with the level and temperature of humidity; And the vapor deficit, which tells you how much water is in the air, how much water can hold the air. This is a lot of information, but it is probably using boundary to the public.

The support of the substance is supported through a hub, so I connected the switchbot meter Pro CO2 monitor to Apple Home. Here, I got temperature and humidity readings but that was it.

It is not particularly useful using Alexa, either. Asking what is a carbon dioxide level to obtain a numeric reading, it is limited use.

Should you buy it?