Target gas |
Carbon dioxide (CO2) |
Operating principle |
Non-dispersive infrared (NDIR) |
Measurement range |
0-5,000ppm |
Working temperature |
-10°C ~ 50°C |
Working humidity |
0-95%RH (non-condensing) |
Storage temperature |
-30°C ~ 70°C |
Storage humidity |
0-95%RH (non-condensing) |
Accuracy |
± (50ppm+5% of reading) @25±2℃, 50±10%RH |
Sampling frequency |
1s |
Time to first reading |
≤30s |
Power supply |
DC 3.5V-5.5V |
Ripple wave |
<50mV |
Working current |
<30mA @ 1s |
Dimensions |
33x19.7x8.9mm (pin is not included) |
Weight |
5g |
Signal output |
UART: TTL |
PWM: linear output |
I²C |
PWM output |
Output high level minimum duration: 2ms (0ppm) |
Output high level maximum duration: 1004ms (5000ppm) |
Alarm output (Reserved) |
According to customer’s actual usage environment and requirements |
Life span |
≥10 years |