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Infrared Carbon Dioxide Gas Sensor Features: Measuring range：0-0.5% or 0-10%vol Working voltage：DC3.5V～6V，working current：85 mA Working temperature -25℃～85℃ Signal output：digital output、analog output（Voltage of Signal 0.4～2.0V） Accuracy：0~1%：1%FS; 0~5%:2%FS Dimension：Φ20 x 19mm（pin excluded） Output interface：5-pin output

Specification:

Specifications
Working voltage	3.5-6VDC
Working current	75-80mA
Output voltage	0.4V-2VDC
Measurement range	0-0.5% or 0-10%vol
Resolution	Measurement range  A: 0～0.5%vol, resolution is 0.001%；Measurement range B: 0%～10%vol  resolution for 0.01%
Warm-up	30s
Response time T90	<25s
Zero repeatability	±1%FS （20℃）
Sensitivity repeatability	0～5%vol：0.1%；5%～100%vol：2% （20℃）
Zero drift	1%/month
Working temperature	-20℃-55℃
Storage temperature	-20℃-55℃
Digital signal format	Data bit:8; Stop bit: 1; Check bit: null
Standard baud rate	9600bps,19200bps,38400bps
Dimensions	Φ20 x 19mm（except pin）
Output pin	5pin
Lifespan	>5year
Weight	15g

Installation Dimension:

Definition:

Note:

Digital output：TTL electrical level，voltage signal is 0 or 2.5v，pay attention to level switching when connecting external circuit, computer circuit is illustrated below：
Baud rate：9600bps
Data bit：8
Stop bit：1
Check bit：null

Power Supply ：DC3.5V～6V