The MicroRAE is a wireless four-gas diffusion monitor that simultaneously measures up to four gases, including hydrogen sulfide, carbon monoxide, oxygen and combustibles (LEL).

With its multiple wireless connectivity options the MicroRAE can deliver real-time instrument readings location and alarm status to other wireless solutions such as ConneXt Plus, ConneXt Pro, ConneXt Loneworker and Safety Communicator.

The MicroRae


User-Friendly Wireless Gas Detector

The MicroRAE four-gas portable detector brings enhanced user-friendliness and flexibility to wireless gas detection. This enables continuous, instant visibility of safety threats for faster, more informed decisions, to protect workers, facilities, and the environment, and to optimize operations.

The MicroRAE is a wireless diffusion detector that simultaneously monitors up to four gases, including hydrogen sulfide, carbon monoxide, oxygen, and combustibles (LEL). Thanks to its numerous wireless options, when used in line with Honeywell specifications, MicroRAE can be engaged in almost any connected worker application.

User-friendly design the MicroRAE is small, lightweight and easy to handle, while rugged enough to stand up to harsh environments. That means your workers can maneuver freely without their detector getting in the way. And since it’s so simple to operate, they can focus on the job at hand, not how to work their gas detector. Reliable alarm awareness The MicroRAE has a 100-decibel alarm, the loudest of all our detectors, so even if workers are in a noisy environment, they’ll know that danger is present. The MicroRAE also has a backlit screen and LEDs for maximum visibility in challenging conditions.

  • Numerous Connectivity Solutions

  • Strong, Protective, Concussion-proof design

  • Five-way local and remote notification of alarm conditions.

  • Filtered LEL Sensor options to inhibit sensor poisoning.


Real-time gas concentration reading, location, alarm and status enabled by state of-the-art wireless technology.

Great Connectivity

Bluetooth low energy connection to a Smart Phone device for uplink data communication and device configuration, Compact and lightweight design

Reliable Alarm System

Five-way local and remote notification of alarm conditions. Short bump test and calibration time. Global approval for worldwide acceptance


Strong, protective, concussion-proof design. Real-time gas concentration readings, location, alarm, and status enabled by state-ofthe-art wireless technology. IP67 water and dustresistant case


Honeywell ConneXt compatible with Mesh and Wifi wireless configurations with Bluetooth low energy connection to a Smart Phone device for uplink data communication and device configuration


Multi-tone 100 dB buzzer, vibration alarm, and flashing LEDs and on-screen indication of alarm conditions
Wireless connectivity alarm
Man Down Alarm and real-time remote wireless notification
Wireless Range
Up to 650 ft (200 m) for sub1 GHz Mesh Radio3, up to 330 ft (100 m) for WiFi3, up to 15 ft (5 m) for BLE
Instrument Size
4.6 in x 3.0 in 2.6 in 3.0 in x 0.9 in [117 mm x 76 mm 66 74 mm x 24 mm]
Continuous datalogging 6 months for 4 sensors at 1-minute intervals


Ip Rating
Safety Certifications
US & Canada
II 2G Ex ia d IIC T4 Gb
I M1 Ex ia I Ma
INMETRO Ex da ia IIc T4 Ga
206 Grams
7.03 oz
Humidity Range

Sensor Specifications

Gas MonitorRangeResolution
Oxygen (O2)0 to 30.0%0.1%
Combustible0-100% LEL1% LEL
Carbon Monoxide (CO)0-1000 ppm0 - 250 ppm / 1 ppm
250 - 1,000 ppm / 3 ppm
Hydrogen Sulfide (H2S)0-100 ppm0 – 50 ppm / 0.1 ppm
50 – 100 ppm / 1 ppm
Hydrogen Cyanide0 to 50 ppm0.2 ppm

MicroRAE Basic Operation | How To Videos | Honeywell Safety

Operation and function of the Rae Systems MicroRae