Odosense Smart

The Odosense Smart is a smart odour monitoring device specially developed to monitor odorants in the ambient atmosphere. The Odosense smart is a sensor-based IoT powered online odour monitor for peripheral monitoring across odourful sites and activities. So, the smart odour monitor is used for applications like monitoring in and around facilities like solid waste monitoring plants.

Odour monitoring around solid waste plants, dump yards and landfills is very crucial as they are usually around the city vicinity and the odour nuisance could be a health hazard for the surrounding residents. It is also essential to keep a track of odour intensity to take suggestive actions like planning odour mitigation activities. Additionally, in the case of false complaints, the authorities have the data for reference purposes.

Odosense Smart measures odourful parameters such as Sulfur Dioxide (SO2), Hydrogen sulphide (H2S), Ammonia (NH3), Methyl Mercaptan (CH3SH), TVOC (Benzene, Toluene, Xylene), Temperature and Humidity.

The Odosense Smart is technologically equipped to offer higher accuracy with features such as patented e-breathing technology, Auto device firmware updates, and remote calibration capabilities. Additionally, our systems are backed with AI ML algorithms to understand odour levels and impact.

Odosense Smart Odour Monitoring Device can transmit data through various data communication modules such as GSM, WiFi, LORA, etc. So, the data is transmitted to the Oizom cloud in near real-time. Additionally, it has an inbuilt memory backup to ensure no data loss in case of network failure. This ensures the best device uptime. The collected data can be visualized on the Oizom IoT Terminal in the form of real-time dashboards, upon collection on a dense network of data points and integrating weather data we can also generate odour plumes and odour dispersion heatmaps. By integrating data from the Odosense Smart onto 3rd party odour modelling platforms we can also enable advanced analytics on the odour levels.


  • Integrated monitoring solution including important odourants like SO2, H2S, NH3, CH3SH, TVOC, Light, UV, Temperature, Humidity.
  • Options to attach external modules from a wide range of parameters like Wind-speed, Wind-direction, Rainfall, Ambient Noise.
  • Solar compatible solution with internal battery for more than 24Hours backup.
  • Wide range of communication protocols to choose from (as per solution architecture and availability).
  • Easy to install using plug-and-play design. Versatile mounting availability to install on pole, wall, fence, or any existing structure.
  • The low cost solution to deploy at multiple locations to establish a dense odour monitoring network.
  • Using onboard calibration capability, an installed device can be calibrated on the spot without taking back to the laboratory.
  • Real-time data transfer allows for appropriate environmental actions.
  • Data availability in Odour Data Software Platform for further visualization and analytics.
  • Odour Data API fulfils various applications and use-cases.”


Sulfur Dioxide (SO2)

Hydrogen Sulfide (H2S)

Ammonia (NH3)

Methyl Mercaptan (CH3SH)

TVOC (Benzene, Toluene, Xylene)

Ambient Light and UV Radiation

Temperature and Humidity


Patent Pending Technology: Works on innovative e-breathing technology for higher data accuracy

Solar Powered: Capable of running independently on solar power

Retrofit Design: Plug and play design for ease of implementation

Compact: Light-weight and compact system installed at 12-15 feet (4-5 m) height

Ultimate Durability: Made of high-grade engineering-metal and composite polymers for long life

Real-Time Data: Continuous monitoring and real-time data transfer at configurable intervals

Network Agnostic: Supports a wide range of connectivity options like GSM / WiFi / LoRa / NBIoT/ Ethernet

Weatherproof: IP65 grade enclosure for endurance against harsh weather conditions

Tamper Proof: Comes with a security system to avoid tampering/malfunction/sabotage

Identity & Configuration: Each equipment carries its unique identity with geo-tagging through wireless configuration

Over-The-Air Update: Automatically upgradeable from a central server without any onsite visit

3-Level Calibration: Can be calibrated by a third party nodal agency, reference station co-location, and spot calibration


These are the external modules that can be attached to the Odosense Smart. Please note that the external modules do not come as a part of standard offerings. You can order it separately or include it while purchasing the odour monitoring device. Please speak with our expert team to choose the right accessories as per your application.


Our odour monitoring device works on proven working principles such as NDIR, PID, Electrochemical Analysis, Semiconductor, Optical Measurement. As a part of our proprietary ‘Micro Active Sampling’ (e-breathing technology), we also have a sophisticated suction-and-exhaust system for air sample collection and monitoring inside a controlled environment. This isolates the effect of the external environment on measurement to achieve 13% higher accuracy than the industry standards.

Electrochemical Analysis – The gaseous emission is treated electrochemically, where an external potential is applied. Each species such as CO2, H2S, CH4, etc. is identified depending on their oxidation or reduction potential.

NDIR – The gases emitted from the location undergo Non-dispersive Infrared Radiation where the sample air is subjected to infrared radiation. Different gaseous molecules absorb IR at different frequencies. Hence, the amount of IR absorbed gives the volumetric concentration of each gaseous constituent.

PID – The photoionization detection method is used to quantify TVOCs present in the sample. Highly energized UV photons bombard the molecules, which ionize and make them positively charged. These ionized molecules, in return, produce an electric current which gives a volumetric concentration of the molecules. So, the higher the current generated, the higher is the gaseous concentration in the sample.

Data communication

GSM/GPRS: Second-generation digital cellular network for global coverage

Ethernet: Wired local area network deployment capability for secure data transfer

LoRa: Low Range, Low Power consumption transmission in sub-gigahertz radio frequency bands like 433 MHZ, 868 Mhz & 915 Mhz.

Sigfox: Wide-reach & ultra-narrowband transmission for extensive area coverage with up to 140 uplink messages a day, 12 octet payload, and 100 bytes/second data rate.

LTE: Standard wireless broadband communication for mobile devices and data terminals

NB-IoT: High connection density capability with single Narrow-Band of 200kHz and enhanced Machine-Type communication LTE.

WiFi: Wireless Local Area network deployment functionality based on the IEEE 802.11 standard.

MODBUS: RS283 and RS485 based industrial grade communication

Data Accessibility

Odour gases monitored by our odour monitor, Odosense Lite is accessible using the Air Quality Software. The platform has essential features like

Odour Data Overview

Micro-analysis Dashboard

Historical Data Analytics

Odour Report

Smart Alerts

Historical Data-set Download

Odour Data is also accessible using secured HTTP/MQTT APIs.  These APIs ensure data publishing on Public displays, Smart TVs, Websites (using the widget), and Mobile Apps.

By building conditional algorithms and logic on the realtime odour data, environmental automation is possible.


Odosense Brochure
Odosense Smart Brochure