CARBON DIOXIDE MONITOR (Model CO2-200) For automated CO2 dispensing. When the economically priced CO2-200 is attached to the Plant Pro, you simply dial up the CO2 concentration you would like to maintain in your grow area (for example, 1500 PPM). Plug your CO2 dispensing equipment (bottled or generator) into the CO2 AC outlet on the front panel and Plant Pro maintains that level in your garden during the lighting cycle. The display on the Plant Pro can be set to show the actual concentration of CO2 in the garden during operation in PPM (parts per million). The supplied 10 foot cable allows for optimum location for best measurement accuracy. CO2-200 Has all the great specs of the CO2-1. But due to the economies of custom circuit integration and surface mount technology, it is the first really affordable CO2 sensing system offered to the indoor gardening market. Specifications Measurement electronics: Microprocessor controlled non-dispersive infra-red analyzer Measurement range: 0-2000 PPM Sensor accuracy: +/- 50 PPM typical Resolution: 10 PPM Dimensions: 5.2" x 3.2" x 1.4" Weight: 6.5 oz. (.35Kg) Recommended Calibration Interval: 5 years Warranty: One year, parts and labor through repair or exchange. Supplied with 10' cable (can be extended an additional 15' with EXT-1 extension cable) and wall plug power supply. Works with Solatel Plant Pro controllers only Back