Sensaphone Carbon Dioxide Sensor FGD-0068 for Use with Monitors with 4-20mA Input Signal Sensaphone Carbon Dioxide sensor allows remote monitoring of carbon dioxide levels from 0-2,000 ppm using any Sensaphone remote monitor that will accept a 4-20mA input signal. See list below. The carbon dioxide detector requires a 24VDC power supply to operate Part # FGD-0053, not included . Sensaphone Carbon Dioxide CO2 Sensor Specifications CO2 Range 0-2,000 PPM Accuracy /- 50 PPM Operating Temp Range 32 degrees to 122 degrees F 0 degrees to 50 degreesC Response Time 2 Minutes for 90% step change Housing White plastic Compatibility 1400, 1800, 2000, 2800, Express II, SCADA 3000 and WEB600 Package Contents x1 Carbon Dioxide sensor x1 Installation Instructions This item ships from a separate warehouse and may require extra time for delivery.