Carbon dioxide sensor principle: non-dispersive infrared absorption Carbon dioxide measurement range: 400-5000ppm, resolution: 1ppm Carbon dioxide measurement accuracy: 50ppm or 5% Carbon dioxide detection refresh frequency: 1 second PM2.5 detection range: 0-500 g/m PM10 detection range: 0-500 g/m PM2.5/PM10 sensor principle: laser scattering Temperature measurement range: -20C to 60C Humidity measurement range: 5% to 95% RH Operating temperature: -10C to 50C Operating humidity: 0% to 95% RH (non-condensing) Temperature and humidity sensor: dedicated ASIC sensor chip, high-performance semiconductor silicon-based electronic humidity sensor and on-chip temperature sensor Power supply: DC 6V to DC 36V or POE Color: Black Material: ABS Package Contents: 1 x detector Note: Other items not included. Note: Lighting and display differences may cause slight color variations between the image and actual item. Measurement error allowed: 1-3 cm.