3 ms·
Anything under $60 doesn't have a 'real' CO2 sensor. One of the good budget ones is Cleargrass Air Monitor.
by tomaskafka 4y ago
Anything under $60 doesn't have a 'real' CO2 sensor. One of the good budget ones is Cleargrass Air Monitor.
- s0rce 4y agoYou can diy for under 60 with a photoacoustic SCD41.