Honeywell Transmission Risk Air Monitor (HTRAM-V1-W)

SKU: HW-32-3
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Tracking carbon dioxide levels indoors is an inexpensive and powerful way to monitor the risk of people getting COVID-19, according to new research. In any given indoor environment, when excess carbon dioxide levels double, the risk of transmission also roughly doubles, scientists report.

Honeywell Transmission Risk Air Monitor (HTRAM-V1-W)

A cost-effective monitor for use in schools, restaurants, and other small-to-medium sized buildings that alerts users when conditions are present that may increase the risk of exposure to airborne viral transmission.*

Classrooms, restaurants, and buildings with outdated HVAC and ventilation systems can foster environments where the risk of airborne virus transmission could increase.* Honeywell proprietary technology that monitors CO2 levels, coupled with user-controlled settings to account for human activity levels in an indoor area, provides users with a portable, cost- effective, and user-friendly solution that alerts when conditions are present that may increase the risk of exposure to airborne viral transmission.

Using this new guidance and algorithms, Honeywell identified air quality conditions that are driven by common activities and variables such as average room size, number of people present, breathing rate, and duration. The device comes with three pre-programmed indoor activity settings: low activity (movie theaters, libraries, and classrooms), medium activity (restaurants, offices, small clinics), and high activity (gyms, indoor arenas, recreation centers) and is recommended for coverage of 800-1000 square feet.

For each setting, the monitor provides indications using a traffic light pattern (green, yellow, or red) and a sound alarm so users can be aware of reduced ventilation conditions that may increase the risk of airborne transmission based on detectable CO2 levels. This alerts users to then take action such as opening doors and windows.

Features and Benefits

  • Monitor carbon dioxide, temperature and relative humidity
  • Uses non-dispersive infra-red (NDIR) sensor for more accurate monitoring
  • Three pre-programmed activity level settings (Low/Medium/High)
  • Traffic Light Visual Indication (Green/Yellow/Red)
  • Sound Alert: one beep for medium alert; two beeps for high alert
  • Small portable size and light weight
  • Easy-to-use one button setting
  • 10 hours battery life using Lithium-ion rechargeable battery
  • 1-year limited product warranty


Dimensions (H × W × D)80 mm × 80 mm × 22 mm [3.1 in × 3.1 in × 0.87 in]
Weight140 g
Housing materialsAluminum alloy
Input voltage5 V
Input current1 A
BatteryLithium-ion rechargeable battery
10-hour battery time
Battery capacity2,600 mAh
Operating temperature &
0°C to 40°C, 0% RH to 90% RH
USB portMicro USB

Sensor Range

CO2 (NDIR)400 ppm to 2000 ppm, up to 10,000 ppm extended range
Temperature-20°C to 60°C or -4°F to 140°F
Humidity0% RH to 100% RH

Additional information

Weight1 kg

Manufacturers Code