CO200 : Desktop Indoor Air Quality CO2 Monitor , with relay output

• air quality monitor+ relay output: CO2, air humidity & temperature
• measuring range: -10...+60°C ( resolution: 0,1°C )
                          0...99,9% RH ( resolution: 0,1% RH )
                          0...9999ppm ( resolution: 1ppm )
• air quality levels: GOOD, NORMAL, POOR
• adjustable limits for CO2 
• audible alarm
• relay output for ventilation control: 1A 30VDC / 0,5A 125VAC
  2,5mm stereo phono socket
• power: 5VDC ( adapter included)
• real-time data & time
• MIN/MAX memory
• automatic calibration over 7,5 days calibrated from min. CO2 level
• size/weight: 117 x 102 x 102 mm  / 204g