Product Details Portlet

2JCIE-BU Environment Sensor (USB Type)

Sense a variety of environmental information

  • Connects to a network via USB or Bluetooth® to enable the sending of measurement data
  • Using OMRON's unique and innovative algorithm, enables highly accurate determination of earthquakes based on vibrational acceleration
  • Enables continuous monitoring of room air quality using a VOC sensor
  • Introduction of 2JCIE
    Introduction of 2JCIE

    3 features of Environment Sensor 2JCIE

RoHS Compliant
Model 2D/3D CAD ECAD(Download symbol,FootPrint,3DCAD)
* External site (Ultra Librarian) opens in a new window.
2JCIE-BU01 Download Download
2JCIE-BU01-FL1 Download Download
(*) Ultra Librarian uniquely created ECAD data based on the information provided by OMRON. Please note that OMRON does not guarantee the accuracy, concurrence or completeness of ECAD data.
Note: This web page provides an excerpt from a datasheet. Refer to Product Datasheet and other applicable documents for more information.


Concepts and application examples can be seen with Environment Sensor Special contents.

Environment Sensor Special contents
  • Heatstroke Risk Levels∗3

    Heatstroke risk level is determined by air temperature and humidity.
    Users can estimate the risk of heat while performing day-to-day activities.

    Sensing Technology
    [ Guideline for action limits ]
    Reference temperature WBGT Heat stress precautions Awareness guide
    31°C or above
    (88°F or above)
    Dangerous heat for all activities. Especially dangerous to senior citizens, even if they are just resting. Avoid going outside and stay indoors in cooler places.
    Severe warning
    28°C – 31°C
    (82°F – 88°F)
    Dangerous heat for all activities. Stay out of the blazing sun and be aware of indoor ambient temperature rise.
    25°C – 28°C
    (77°F – 82°F)
    Dangerous heat for activities that involve moderate to strenuous physical exercises. Take adequate rest periods during physical training and strenuous work.
    Below 25°C
    (Below 77°F)
    Dangerous heat for activities that involve vigorous physical exercises. Risk is low but still exists on the basis of vigorous exercises and hard labor.
  • Heatstroke Risk Levels
  • Discomfort Index∗3

    The discomfort index is calculated from the air temperature and humidity to help users realize the importance of maintaining a comfortable environment.

    Sensing Technology
    [ DI=0.81T+0.01H(0.99T-14.3)+46.3 ]

    DI: Discomfort Index T: Temperature (°C) H: Humidity (%)

    Discomfort index Thermal comfort
    65 – 70 Comfortable
    70 – 75 Neutral
    75 – 80 Warm
    80 – 85 Uncomfortably hot (sweating)
    85 – Severe heat
  • Discomfort Index
  • Seismic Detection

    The sensor uses Omron’s unique spectral intensity (SI) value calculation algorithm to distinguish between seismic activity and other movements. The sensor data can be used to map damage conditions by area.

    Sensing Technology
    [ Correlation between SI value and measured seismic intensity scale ]
    SI value (or spectral intensity):
    SI value is equivalent to the magnitude of the destructive energy imposed by seismic motion on structures. SI value has a high correlation with the seismic intensity scale which helps identify seismic hazards in your vicinity.
  • Correlation between SI value and measured seismic intensity scale
    Reference example
  • VOC Detection

    The sensor allows eTVOC reading which refers to the total concentration of volatile organic compounds to help users realize the importance of maintaining a comfortable environment.

    Sensing Technology
    [ Operating principle ]
    VOC Detection Operating principle
    • Oxygen is adsorbed onto the surface of metal oxide.
    • When VOCs are emitted into the atmosphere, the gases react with the absorbed oxygen, changing its absorbed amount on the surface.
    • The change in the amount of absorbed oxygen eventually increases or decreases the surface conductivity. This mechanism allows the sensor to detect VOC gases.

    Note. VOC sensor does not identify gas types. Only outputs the total concentration of VOCs.

  • VOCs (Volatile Organic Compounds):
    VOCs include such as alcohol consumption, cigarette smoking, and formaldehyde.
    eTVOC∗2 (equivalent Total Volatile Organic Compounds):
    eTVOC refers to the total concentration of volatile organic compounds in a room environment.
    VOC Detection

Ordering Information

● Main unit

Model Communication Interface Output data Minimum packing unit
( Unit: pcs )
2JCIE-BU01 Bluetooth®∗5 low energy USB communication Temperature, Humidity, Light, Barometric pressure, Sound noise,3-axis acceleration∗1, eTVOC∗2, Discomfort index∗3, Heat stroke warning level∗3,Vibration information∗1 (No. of earthquakes, No. of vibrations, SI value ∗4 ) 1

● Accessory (sold separately)
The filter cap protects the Environment Sensor (USB Type) from airborne dust/mist, deodorants and air fresheners used in the general household environment, and substances generated by cooking and smoking. Install the product on the body of the environment sensor.

Type Model Interface
Filter cap 2JCIE-BU01-FL1


Item Specification
Power Supply 5 V (USB power supply)
Sensors Temperature, Humidity, Light, Barometric pressure, Sound noise, 3-axis acceleration∗1, eTVOC∗2
Interface Bluetooth® low energy (Bluetooth® v5.0)∗5, USB communication (USB2.0)
Communication range Approx. 10 m ∗6
Operating Temperature −10 to 60°C
Operating Humidity 30 to 85%RH
Dimensions Approx. 29.1 × 14.9 × 7.0 mm
Weight Approx. 2.9 g
Absolute maximum ratings / Power supply −0.3 to 5.5 V
Absolute maximum ratings / Output current Max. 100 mA
Absolute maximum ratings / Temperature −20 to 70°C
Recommended operating condition / Power supply 4.75 to 5.25 V


Item Measurable range Accuracy (Vcc = 5.0 V, Ta = 15 to 35°C if not specified)∗7
Temperature −10 to 60°C ±2°C
Humidity 30 to 85%RH ±5%RH
Light 10 to 2000 lx ±100 lx
Barometric pressure 700 to 1100 hPa ±4 hPa
Sound noise 40 to 94 dB For reference∗8
3-axis acceleration −2000 to 2000 gal For reference ∗1, ∗8
eTVOC 0 to 29206 ppb For reference ∗2,∗8,∗9


(Unit: mm)

● Main unit


● Accessory (filter cap)

  • Attaching the filter cap Filter cap Sensor illumination window Sensor body Location to attach the double-sided tape Filter (both sides) ●  Do not touch the filter attached inside the filter cap. ● Cover the sensor with the filter cap from above by slightly pushing and widening the lower part of the filter cap. ● Double-sided tape is recommended to attach the filter cap firmly.
  • Precautions when attaching the filter cap Make sure that there is no gap between the sensor body and the cap. Make sure that the sensor illumination window on the body and the cap are not misaligned.

Safety Precautions

To assure the correct use of the product basic safety measures should always be followed including the warnings and cautions listed in this document.



Warning: Improper use may result in death or serious injury.

  • In places where radio communications are prohibited, turn off the Bluetooth®.
  • Do not place the unit closer than 22cm (9 inches) from implantable medical devices such as pacemakers.
  • Keep the unit out of the reach of young children.
    If young children swallow any small piece, immediately consult a doctor.
  • Please stop using the unit immediately, if there is strange smell or smoke from the unit.
  • Do not subject the unit to extreme temperatures, humidity, moisture, or direct sunlight.
  • Internal condensation due to severe change in temperature may cause malfunction.



Caution: Improper use may result in minor or moderate injury to the user or damage to the equipment.
* Property damage refers to damage related to houses and household belongings, as well as domestic animals and pets.

  • Do not use the unit in the field of strong electromagnetic waves and static electricity.
  • Please read the instruction manual of your smartphone or tablet for the wireless communication.
  • This unit is not a measurement instrument.
    The measured values must be treated as a reference, and do not use it for the purpose of verification or diagnosis.
  • Do not disconnect the unit from the connected device during USB communication. Doing so may cause failure or data loss.
  • Do not forcefully grip the unit or handle it in a reckless manner.
    Doing so may cause the unit to be damaged or may cause injury.

Precautions for Correct Use

  • Do not use this product with its vent holes (both sides) and window covered. This will prevent accurate measured values from being obtained.
  • Do not disassemble or modify the unit.
  • Do not subject the unit to strong shocks or vibrations, drop it, step on it.
  • As this is a precision instrument, do not pull forcefully on its mounting portion or subject it to stress such as twisting, bending, or shock. Doing so may cause failure or deterioration.
  • Do not immerse the unit or any of the components in water.
    The unit is not waterproof. Do not wash it or touch it with wet hands. Be careful that water does not get into the unit.
  • Depending on the surrounding environment and the mounting position, the measured characteristic may vary. The measured values must be treated as a reference.

    1. Do not subject the unit to extreme temperatures, humidity, moisture, or direct sunlight.
    2. Do not use the unit where it will be exposed to dew condensation.
    3. Do not subject the unit to water, oil or chemical materials.
    4. Do not use the unit where it will be exposed to flammable gas or corrosive vapors.
    5. Do not use the unit where it will be exposed to dust, saline matter or iron powder.
    6. Install in a location as far away from heat-generating instruments, etc., as possible.
  • Firmware updates may be provided to improve product functions or to fix bugs. Visit the following URL and search the product name. Check the "Software" page for the appropriate product
Filter cap 2JCIE-BU01-FL1
  • Do not touch the inner filter when mounting the filter cap.
  • Make sure that the environment sensor body and the sensor illumination window on the filter cap are not misaligned.
  • Avoid storing the filter cap in a hot and humid place as it may deform the filter cap.


In order to download this software, you must agree to the license agreement.

Software name
  • USB driver
  • USB driver Installation manual
  • Firmware
  • Firmware update tool
  • Firmware update tool manual