• No products in your bin.


Monitor CO2, Temperature, And Humidity Via Your Wi-Fi Network

The WIFI-CO2 is a single wireless device that measures carbon dioxide, temperature, and humidity.  Tracking changes in air circulation allows you to monitor air handling equipment and quickly detect impeded airflow, stalled fans, leaks, blockages, or clogged filters. Use the WIFI-CO2 to measure air circulation and track building occupancy for the comfort and safety of your building’s occupants.

The versatility of the WIFI-CO2 makes it a perfect fit for a variety of applications including:

  • Tracking building air quality
  • Monitoring HVAC systems
  • Counting indoor human occupancy
  • Monitoring horticulture facilities and greenhouses
  • Track air quality in office buildings and schools

Reliable CO2 Monitoring

The CO2 module we use in the WIFI-CO2 sensor is self-calibrating, zero maintenance, and features:

  • Range of 0-2000 PPM
  • Accuracy up to 30 PPM
  • Selectable CO2 measurement interval
  • 15 year CO2 sensor life expectancy

Integrates With Your Monitoring Systems

  • WIFI-CO2 readings populate seamlessly into the WiNG-MGR’s user interface, which also provides an optional calculated dew point reading.
  • If you’re using a BMS, the WIFI-CO2 transmits temperature and humidity information via a UDP packet to your BMS.

Wireless And Battery Powered

RLE’s Wi-Fi sensors are compact and unobtrusive, yet provide an industry leading battery life – WIFI-CO2 sensor batteries will last up to FIVE years communicating under normal room temperatures and at the default five minute transmission rate.

No wires are required for power; no wires are required for data transmission.

Designed With Security In Mind

  • Only allows one-way communications.
  • Supports WPA/WPA2‑PSK encryption.
  • Encrypted data storage for network and configuration information.

Key Features

  • Proprietary wireless design
  • CO2 module is self-calibrating, zero maintenance, and features:
    • Range of 0-2000 PPM
    • Accuracy up to 30 PPM
    • 15 year CO2 sensor life expectancy
  • Transmits on your existing Wi‑Fi network
  • Supports DHCP or static IPv4 addresses and static IPv6 addresses
  • Configurable transmission rate
  • Optional calculated dew point when used with the WiNG‑MGR
  • Affordability and reliability that are second to none

WIFI-CO2 Specifications

Power: 7.2V (two 3.6V AA lithium batteries)

Battery Life: Battery life varies based on Wi-Fi signal strength and access point performance

  • IPv4: Up to 5 years at 5 minute transmission intervals; up to 2 years at 2 minute transmission intervals
  • IPv6: Up to 5 years at 15 minute transmission intervals

Shelf Life: 10 years in quiescent mode with battery installed


  • Wi-Fi: 2.4 Ghz 802.11b/g/n, supports WEP, WPA (TKIP) or WPA2 (AES) encryption
  • IPv4: Static or DHCP
  • IPv6: Static

Transmission Interval: 1-30 minutes (configurable)

CO2 Sensor

  • Range: 0-2000 PPM
  • Accuracy: +/- 30 PPM plus 3% of reading

Temperature Sensor

  • Accuracy At Room Temperature: Typical +/- 0.2°C; Max +/- 0.4°C; Room temperature is specified as 32ºF to 140ºF (0°C to 60°C)
  • Accuracy Over Full Operating Range: Typical +/- 0.6°C; Max +/- 1.0°C

Humidity Sensor

  • Accuracy Over Standard Operating Range: Typical 2%; Max 3.5%; Standard operating range is specified as 20% to 80% RH (Non-condensing)
  • Accuracy Over Full Operating Range: Typical 3.5%; Max 6%

Operating Environment

  • Temperature: -13ºF to 185ºF (-25ºC to 85ºC)
  • Humidity: 0% to 90% RH (Non-condensing)
  • Altitude: -200 ft to 15,000 ft (-70m to 4572m)

Mounting: Free standing, zip ties, screw and keyhole – spaced 2.5” (6.4cm), junction box – 2 screws spaced 3.28” (8.3cm)

Dimensions and Weight: 4.4”L x 2.5”W x 1.5”H (11.2cmL x 6.4cmW x 3.8cmH), 0.2lb (0.10kg)

Certifications and Standards: EN-61326-1:2013, EN 301 489-1 V2.1.1, EN 301 489-17 V 3.1.1, Subpart B of Part 15 of FCC Rules for Class A digital devices, ANSI/UL 61010-1:2012, CAN/CSA-C22.2 No. 61010-1:2012 (3rd Edition), EN 61010-1:2010 (3rd Edition), and IEC 61010-1:2010. Contains FCC ID: Z64-CC3220MOD or Z64-CC3235MOD; Contains IC/ISED: 451I-CC3220MOD or 451I-CC3235MOD; Contains MIC: 201-170386 or 201-190033

Product Documentation Links

Technical Resources

You may need to install a driver on your computer to communicate with the WIFI sensor. If your computer prompts you to install a driver, you can find the appropriate VCP driver here:


View Your Quote

Many of our products are available for purchase online.
Shop now and get the products you need shipped right to your door!