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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