Carbon Monoxide Monitor with Temperature and Humidity, REED R9450 


Multi-line LCD screen simultaneously displays carbon monoxide (CO), ambient temperature, relative humidity, time and date.

REED R9450 Offers

This carbon monoxide meter is capable of detecting concentrations up to 999ppm. The R9450 features a LCD display, built-in clock and calendar, max hold function and user adjustable alarm limit.


  • Measures carbon monoxide (CO), air temperature and relative humidity
  • User adjustable alarm limit
  • Built-in clock and calendar
  • Max hold function
  • Can be mounted on a wall or placed on desktop
  • Manual CO calibration to zero
  • Low battery indicator

REED R9450 Specifications

Measuring Range 0 to 999 ppm
Accuracy ±5% of reading or ±10 ppm
Resolution 1 ppm
Sensor Type Stabilized electrochemical sensor
Measuring Range 32 to 122°F (0 to 50°C)
Accuracy ±1.2°F (0.6°C)
Resolution 0.1°F (0.1°C)
Measuring Range 10 to 90% RH
Accuracy ±3% RH (at 25°C, otherwise ±5%)
Resolution 0.1% RH
Display LCD
F/C Switchable Yes
Alarm Audible (Buzzer), Visible (LED)
Adjustable CO Alarm Limit Yes
Max Hold Yes
Date & Time Yes
Warm-up Time 60 seconds
Desktop Stand Yes
Wall Mountable Yes
Power Supply 4 AAA Batteries, AC Adaptor (Optional)
Product Certifications CE
Operating Temperature 32 to 122°F (0 to 50°C)
Storage Temperature -4 to 122°F (-20 to 50°C)
Operating Humidity Range 0 to 90% (non-condensation)
Dimensions 4.4 x 4.3 x 1.1″ (113 x 108 x 28mm)
Weight 5.6 oz (159g)

Ideal Applications for the REED R9450

Continuous environment monitoring applications in:

  • Office buildings
  • Vehicles
  • Garages
  • Warehouses
  • Manufacturing Facilities

Included with the REED R9450

  • Desktop Carbon Monoxide (CO) Monitor with Temperature and Humidity
  • Batteries