MST136 air quality (odor) sensor has the advantages of high sensitivity, low cost, long life and low power consumption. It is a broad spectrum gas sensor with high sensitivity to many trace reduction gases (or micro-toxic gas molecules). These gas molecules include, Ammonia, hydrogen, alcohol, carbon monoxide, methane, propane, glycerine, styrene, propylene glycol, phenol, toluene, ethylbenzene, xylene, formaldehyde and other organic volatile gases, cigarette, wood, paper burning smoke, soot, etc.
MST136 type air quality (odor) sensor belongs to metal oxide planar semiconductor sensor, which is made of nano SnO2 powder and catalyst doping and sintering. When there is a trace of reducing pollution gas in the air, the conductivity of the sensor will increase. The change of conductance increases with the increase of pollution gas concentration. By the amount of conductivity change, the sensor can sense the degree of air pollution. For example, when there is a second-hand smoke or cosmetics volatile molecules, the sensor can produce conductivity changes. Using this sensitive characteristic of the sensor, and then through the simple single chip microcomputer control, we can realize the intelligent start of exhaust ventilation equipment, so as to achieve the effect of intelligent indoor air purification.
MST136 type air quality (odor) sensor has a very wide range of applications, such as family, hospital, dinner/hotel, conference room, reception room, hotel, car/train station waiting hall, chess room, club, etc. These occasions will often appear formaldehyde, second-hand smoke, alcohol and other air pollutants, in this case, the intelligent air purification system can automatically start. It can also be widely applied to the Internet of Things to sense the air quality status of a certain space in the Internet of Things and realize the air quality monitoring within the scope of the Internet of Things.

Features:

| Model number | MST136 | |||
| Packaging standard | Metal TO-05 | |||
| Detection gas | Hydrogen,alcohol,smoke,etc | |||
| Detection range | 0-200PPM(alcohol)0-10PPM(formaldehyde) 0-10000PPM(natural gas)0-4000PPM(Hydrogen) |
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| Standard loop | Heating voltage | VH | 5.0±0.2V DCIAC | |
| Component characteristics under standard test conditions |
Heating voltage | VH | 5.0±0.2VDC | Ps≤15mW |
| Loop voltage | Vc | Adjustable | Ps≤15mW | |
| Load resistance | RL | 85Ω±10Ω(room temperature) | ||
| Heater resistance | RH | 55mA±5mA | ||
| Heating sheet current | Ia | 260mW±10mW | ||
| Sensitivity change | >0.5V | 10PPM(ethanol) | ||
| Under standard test conditions |
Temperature and humidity | 20±2℃,65±5%RH | ||
| Preheating time | No less than 24hours | |||
| Response time | ≤30s | |||
| Desorption time | ≤60s | |||


COMPANY
Founded in 2019, MaiYa Sensor is an enterprise specializing in the R&D, production, and sales of gas sensors, gas detection modules, and complete gas detectors. We are deeply engaged in the field of gas detection and have always been committed to providing customers with suitable, stable, reliable, and cost-effective gas detection solutions.
1.Core Strength
We understand that as our partners, what you care most about are product stability, consistency, cost-effectiveness, and supply capacity. These are exactly the competitive advantages we strive to build:
Independent R&D and production capabilities:
As a source manufacturer with controllable costs, we have our own R&D team and production base, enabling us to oversee the entire process from sensor inspection to complete instrument testing. This ensures our products offer exceptional cost-effectiveness and stable supply cycles.
Strict quality control for reliable quality. We implement a rigorous ISO9001 quality management system. Each sensor leaving our factory undergoes precise calibration and aging tests, guaranteeing fast response speed, high measurement accuracy, long service life, and excellent consistency. This significantly reduces your subsequent maintenance costs and the risk of customer complaints.
A comprehensive product portfolio for one-stop procurement:
Core components. We offer gas sensors based on various principles (such as electrochemical, catalytic combustion, infrared, semiconductor, and PID), covering combustible gases, oxygen, and toxic gases (including CO, H₂S, SO₂, and NO₂). Beyond merely selling products, we possess in-depth expertise in the maintenance and sales of gas detectors. This enables us to provide you with more valuable technical support, including sensor selection guidance, troubleshooting, and alternative solution recommendations—serving as an extension of your technical team.
We can offer flexible OEM/ODM customization services tailored to your specific needs, including adjustments to measurement range, size, interface, and output signal, helping you develop differentiated products.
2.Our Products and Services
Gas Sensors: Electrochemical sensors, catalytic combustion sensors, infrared sensors, semiconductor sensors, PID sensors, etc.
Gas Detectors: Portable and fixed gas detectors (customizable according to customer needs).
Gas Modules: Standardized detection modules supporting multiple gases and various output signals.
Professional Services:
Technical support and solution
consultingOEM/ODM
customizationComprehensive after-sales service and quality assurance system.
3.Mission & Vision
With reliable sensing technology, we safeguard industrial environments as well as life and property safety, striving to become the most trusted partner in the gas detection field. Through continuous technological innovation and lean manufacturing, we promote technological progress and cost optimization in the gas detection industry, aiming to achieve win-win cooperation with our partners.
4. Why Choose Us?
Equipped with independent R&D and production capabilities, we provide you with precise technical support and solutions at more competitive prices. Meanwhile, we strictly control quality to ensure long-term stability and reliability of our products. Having partnered with hundreds of companies in Mexico, Brazil, India, Indonesia, Vietnam, South Africa, and other regions, we deeply understand business needs and can offer efficient communication and services.
We look forward to in-depth cooperation with every partner dedicated to the gas detection industry. For detailed product catalogs, technical parameters, or sample testing, please feel free to contact us!