category: sensors
co2 - carbon dioxide level sensor.
co2 concentration transmitter with 4-20ma output is built in a durable case. output range is user adjustable. large dual line lcd is an advantage. display is possible to switch off.
green led shines - co2 concentration 0 to 1000 ppm
yellow led shines - co2 concentration 1001 to 1200 ppm
red led shines - co2 concentration 1201 ppm and more
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