Volatile Organic Components sensor

The MiCS-5521 is a resistive sensor that responds to a great variety of gases, such as Carbon Monoxide (CO), Hydrocarbons and Volatile Organic Compounds. It’s resistance varies between 1000kΩ and 2kΩ approximately. Like the MiCS-2610, the MiCS-5521 is powered through a 2.5V voltage regulator, with consumption of approximately 32mA. The sensor’s resistance in air, as well as its sensitivity, can vary between different units, so it is recommended to calibrate each one of them before finally inserting them in the application.

Gases: CO, Hydrocarbons, Volatile Organic Compounds *
Measurement range: 30 ~ 400ppm
Air resistance: 100 ~ 1000kΩ
Sensitivity: 1.8 ~ 6 (typically 3, ratio between the resistance at 60ppm and at 200ppm of CO)
Supply voltage: 2.1 ~ 5V DC
Operating temperature: -30 ~ +85ºC
Response time: 30 seconds
Average consumption: 32mA
(*) Chlorinated hydrocarbons, aromatic hydrocarbons, aromatic alcohols, aliphatic alcohols, terpenes, glycols, aldehydes, esters and acids. Detailed list can be found at http://www.libelium.com/downloads/voc-sensors.xls

Documentation:
Waspmote Quick Tutorial
Waspmote Site 
Waspmote Technical Guides 
Sensor Boards Technical Guides 
Networking Guides 
Developers Forum 
Videos 
Articles 
50 Applications with Waspmote 
FAQ: Waspmote Vs. Arduino