If you lived in a big city, you might need the ELT MB-530 Air Quality Monitor to help measure the interior air quality of your room. The device measures the level of Co2, VOCs temperature and humidity so that the air quality in a room can be maintained. All you need to do is to connect this gadget to the air conditioner, humidifier and ventilation device to provide you with the accurate information about the air quality in your room. [AVING]
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