cheap CO2 Carbon Dioxide Sensor Analog 0-10V

[killeriq]

Ive found this sensor...

Can be usefull for analog outputs also price isnt bad

http://www.thanksbuyer.com/infrared-carbon-dioxide-sensor-module-co2-high-sensitivity-40071

http://www.thanksbuyer.com/infrared-...y-w-base-40070 - with base

Others similar cost double on ebay

http://www.ebay.com/itm/Shell-CO2-Carbon-Dioxide-Sensor-Module-MG811-Analog-Output-Voltage-Type-/262040838124?hash=item3d02d9dfec

Anybody has it ...or something else?