lead free 7 years lifetime home use & commercial use CO gas sensor TGS5042

Features: * Battery operable
* High repeatability/selectivity to CO
* Linear relationship between CO gas concentration and sensor output
* Simple calibration
* Long life
* UL recognized component
* Meets UL2034, EN50291, and RoHS requirements     Applications:   * Residential and commercial CO detectors
* CO monitors for industrial applications
* Ventilation control for indoor parking garages
* Fire detection    
 Overview   The figure below represents typical sensitivity characteristics, all data having been gathered at standard test conditions (see reverse side of this sheet).   The Y-axis shows the output current of the sensor (Iout/μA) in each gas. Output current is linear to CO concentration, with a deviation of less than ±5% in the range of 0~500ppm       The figure below represents typical temperature dependency characteristics. The Y-axis shows the sensor output ratio (I/Io) as defined below. The linear relationship between I/Io and CO concentration is constant regardless of the CO concentration range.
I = Sensor output current in 400ppm of CO at various
temperatures
Io = Sensor output current in 400ppm at 20 celsius degree /50%RH