
35
Safety & Specialty Products
GASES DETECTED
Carbon Dioxide
DETECTION PRINCIPLE
Non-Dispersive Infrared (NDIR)
OTHER MEASUREMENTS
Temperature 14° F to 140° F (-10° C to 60° C) 0.1° Resolution
Relative Humidity 0-99.9% Non Condensing / 0.1% Resolution
Range Resolution CO
2
= 0-5,000 ppm / 1 ppm increments
Accuracy CO
2
= ±30 ppm ±5% of reading
OPERATING RANGES
Temperature 32° F to 122° F (0° C to 50° C)
Humidity 0-95% RH Non-Condensing
MECHANICAL SPECIFICATIONS
Warm Up Time 30 seconds
Power 4 AA Alkaline Batteries - disposable only (included)
9 VDC 110 VAC Wall Adapter (N.Am. Plug)
(included for power only - not for charging)
Size 6.6” x 2.75” x 1.25” (17 cm x 7 cm x 3.2 cm)
Weight 7.1 oz. (200 g) including batteries
Certications CE Mark
Warranty 2 years on instrument and CO
2
sensor
Comfort Chek
®
400 Specifications
ORDERING INFORMATION
1580-8001 Comfort Chek™ 400 Kit: instrument comes with batteries,
wall adapter (N.Am. plug + 3 international adapters),
user manual and hard carrying case
1509-0007 Replacement Wall Adapter
Comfort Chek
®
400 Portable Air Quality Monitor
Comfort Chek
®
400 is an affordable, easy to use indoor air quality (IAQ) monitor designed
with three sensors that simultaneously measure and record temperature, relative humidity
and carbon dioxide (CO
2
) levels in the air. The large, backlit LCD displays all three sensor
readings as well as battery status and provides easy readability in dark environments.
Powered by alkaline batteries or with supplied wall adapter.
• Automatically calculates and displays MIN, MAX, STEL and TWA values
for CO
2
• Quick and easy calibration for CO
2
and RH
• Offers around the clock air quality monitoring in ofce environments or
public facilities
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