Features: Dual display: Current CO & Max CO value Auto zero and Auto/Manual calibration 2-point CO calibration Reduced influence of Various interference gasses Low battery indicator Backlight Auto/Manual power off Selectable °C/°F Self-Test Function after power on, testing the sensor and circuit condition Overflow and underflow value indication CE marking Specifications: Measuring Range: 0~999ppm Accuracy: ±20% at 0~100ppm Accuracy ±15% at 101~500ppm Accuracy (at 20±5°C , 50±20%RH) Resolution: CO2 (1ppm) / Air Temp. (0.1°C / 0.1°F) / Air RH% (0.1%RH) Response Time: within 60sec Working Environment Temperature: -10 ~ 60°C Humidity: 5~99% RH (no condensation) Storage Environment Temperature: -40 ~ 70°C Humidity: 0~95%RH (avoid condensation) Power Supply: 3 x AAA alkaline batteries Power Supply: (about 250hrs when backlight is off and 35hrs backlight is on) Dimension: 175 x 47 x 28mm Weight: approx. 120g Set Includes : 1x Carbon Monoxide CO Meter 3 x AAA alkaline batteries 1 x English Instruction Manual 1 x Wrist Strap 1 x Carrying Pouch
