The Comfort Chek has a large LCD that displays all 3 sensor readings, battery status, & is backlit to allow easy readability even in dark working conditions. The Comfort Chek 500 from Bacharach can collect a maximum of 26,000 data points & store them in flash memory. You can easily download your data with a USB port to analyze with the Bacharach IQ Chek software. The Comfort Chek 500 can operate for a maximum of 24 hrs using alkaline batteries, but the included AC adapter is perfect for continuous monitoring of air quality in public buildings, hotels, schools, or office environments.

Gases Detected: (CO) Carbon Monoxide

Detection Method:(NDIR) Non Dispersive Infrared

Relative Humidity Temperature: 0 to 99.9 % (Non Condensing) / 0.1 % Resolution, 14 to 140 degreees F (-10 to 60 degrees C) 0.1 degrees Resolution

Resolution / Range : 1 parts per million increments / CO2= 0 to 5,000 parts per million

Accuracy: CO2= +/- 30 parts per million +/-5 % of reading

Power up Time: 30 Sec.

Size : 6.6 x 2.75 x 1.25 inches (LxWxD), (17 x 7 x 3.2 ) centimeters

Weight: 7.1 ounces (200 grams) with batteries

Display: LCD Backlit Display, CO2 (TWA, STEL, MAX, MIN or realtime), Temp (WB, DP or Air) and RH, All Displayed Simultaneously

Alarm: Selectable Alarm Sound Level; Silence Option

Temp. Range: 32 to 122 degrees F (0 to 50 degrees C)

Humidity Range: 0 to 95 % Relative Humidity Non Condensing

Storage of Data: Internal Memory storage of Data Points (26,000 max)

Downloads: USB to PC using IQ Chek Software

Power: Four Alkaline AA Batteries - (included), 9 Volts DC 110 Volts Wall AC Adapter (North American Plug), (not for recharging - unit power only)

Operation time: 20 to 24 Hrs (with Batteries) with Wall Adapter - Continuous

Approval: CE Mark

Warranty: CO2Sensor and Instrument - 2 Years