CO2 level concentration detector that it is connected directly to a power outlet. It has two internal LEDs in the central part, green and red, which indicate the measuring level where the sensor is located. In addition, it has a buzzer to make audible warnings when exceeding 2500ppm.
In the center of the device, there are two internal LEDs, red and green, which indicate:
Green LED on (<700ppm*): optimal air quality.
Green LED flashing (700-1000ppm*): good air quality level.
Green and red LEDs on at the same time (1000-1500ppm*): acceptable air quality level.
Red LED on (1500-2000ppm*): bad quality level.
Red LED flashing (2000-2500ppm*): poor air quality level.
Red LED flashing + sound emission (>2500ppm*): unacceptable air quality level.
Green and red LEDs flashing simultaneously: faulty sensor.
(*) The CO2 limit values at each level are not modifiable.