Odosense Lite

The Odosense Lite is a real-time odour monitor specially developed to monitor bad and foul smells in the ambient atmosphere. The Odosense lite is a compact online odour monitor for peripheral monitoring across odourful sites and activities. The low-cost odour monitor is also used for applications like monitoring in and around wastewater treatment plants, waste management facilities, sewage odour monitoring and effluent water odour monitoring.

Monitoring around wastewater treatment and sewage treatment plants are essential to keep a track of odour dispersion. Thus, it also enables the maintenance crew to take critical actions at the required intervals for e.g spraying neutralizers at odour hotspots, re-churning the treatment process etc.

Odosense Lite measures odourful parameters like Sulfur Dioxide (SO2), Hydrogen sulphide (H2S), Ammonia (NH3), Temperature and Humidity.

Odosense Lite measures odourful parameters like Sulfur Dioxide (SO2), Hydrogen sulphide (H2S), Ammonia (NH3), Temperature and Humidity.

Oizom’s real-time odour monitor offers higher accuracy. Features like patented e-breathing technology, auto device firmware updates and remote calibration capabilities ensure this. Additionally, our systems are backed with AI ML algorithms to understand odour levels and impact.

This Real-time odour monitor can transmit data through various data communication modules like GSM, WiFi, LORA, etc to the Oizom cloud on a real-time basis. Additionally, it has an inbuilt memory backup to ensure no data loss in case of network failure. This ensures the best device uptime. Oizom IoT Terminal – Envizom allows users to visualize data in the form of real-time dashboards. Upon collection on a dense network of data points and integrating weather data, users can also generate odour plumes and odour dispersion heatmaps. Similarly, by integrating data from the Odosense Lite onto 3rd party odour modelling platforms we can enable advanced analytics on the odour levels. Thus, the utilization of odour data extends to various industrial automation applications in an Industrial IoT (IIoT) environment.


Integrated monitoring solution including important odourants like SO2, H2S, NH3, 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 24 hours 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 lowcost solution to deploy at multiple locations to establish a dense odour monitoring network.

Using onboard calibration capability, an installed odour monitor 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 fulfills various applications and use-cases.”


Sulfur Dioxide (SO2)

Hydrogen Sulfide (H2S)

Ammonia (NH3)

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 real-time odour monitor, Odosense Lite. 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 equipment. Please speak with our expert team to choose the right accessories as per your application.


Our Odour monitor works on proven working principles like NDIR, Electrochemical Analysis, Semiconductor, Optical Measurement. As a part of our proprietary ‘Micro Active Sampling’ (e-breathing technology), we 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 – An external potential is applied to the monitored gases. Identification of species like CO2, H2S, CH4, etc. depends on their oxidation or reduction potential

NDIR – Monitored gases undergo Nondispersive Infrared Radiation. Here, the sample air is subjected to infrared radiation. Different gaseous molecules absorb IR at different frequencies. The amount of IR absorbed gives the volumetric concentration of each gaseous constituent.

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 Lite Brochure
Product application_Foul Odour monitoring from Dumpyards
Product application_Odour Diffusion monitoring from Wastewater Treatment Plants