SemeaTech

What SemeaTech does

SemeaTech Inc. is a privately held sensor manufacturer specializing in hazardous material and environmental monitoring, founded in 2016 by scientists and engineers with its US base in Los Angeles/Irvine, California, and a wholly owned operating subsidiary, SemeaTech (Shanghai) Co., Ltd., in China. The Los Angeles branch focuses on basic science and technology research while the Shanghai branch handles product development and volume production, giving the company a US-China dual-engine structure with no disclosed external funding, parent company, or M&A activity. Headcount is reported in the 51–100 range and the firm is not publicly listed.

The company sells a broad portfolio of electrochemical, photoionization (PID), non-dispersive infrared (NDIR), and radiation-detection sensors organized across platform form factors (4-Series, 7-Series, 3-Series, mini-Series, AQM, 4SM semiconductor, and Commercial) plus smart sensor modules with I2C/UART digital outputs. Differentiated technologies include 4-electrode ppb-level sensors, CsI crystal radiation detectors, graphene/nanotechnology-based gas sensors, and a non-depleting long-life ammonia chemistry. The portfolio spans 30+ target gases in the mini-series and 50+ in the 4SM series, including rare and exotic gases such as phosgene, germane, and silane where competitor offerings are limited.

SemeaTech makes money through direct and channel-based hardware sales to industrial OEMs, system integrators, and end users across industrial safety, environmental monitoring, semiconductor process control, cold-storage refrigeration, mining, and HVAC/IAQ segments. Go-to-market combines an enterprise field-sales motion for customized applications with a global distributor network (Scout Innovations in USA/Canada, Electro Optical Components in North America, Sombol Safety in Europe, Dayi Japan, Citisafe in Singapore) and active participation in major sensor trade shows (SENSOR+TEST, Sensors Converge, Sensor China, AHR Expo, Photonics West). The company holds IECEx, ATEX, UL-62990, UL 2075, ISO 9001/14001, CE, RoHS, and REACH certifications, which collectively serve as regulatory entry barriers into hazardous-environment and safety-critical end markets. Pricing is quote-based and not publicly disclosed.

Name

SemeaTech

Legal name

SemeaTech Inc.

Website

https://semeatech.com

Company type

Private

Founded year

2016

Operating status

Operating

Headcount range

51–100 employees

Short description

SemeaTech is a privately held US-China sensor manufacturer producing electrochemical, PID, NDIR, and radiation-detection sensors for industrial safety, environmental monitoring, semiconductor process control, refrigeration, and HVAC applications worldwide through direct sales and a multi-continent distributor network.

Ownership category

akta.pro rank

Product category

Industrial Gas and Radiation Sensors

NAICS

Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables (334513), Other Measuring and Controlling Device Manufacturing (334519), Navigational, Measuring, Electromedical, and Control Instruments Manufacturing (33451)

SIC

Laboratory Analytical Instruments (3826), X-Ray Apparatus & Tubes & Related Irradiation Apparatus (3844), Instruments For Meas & Testing Of Electricity & Elec Signals (3825)

akta.pro primary industry

Industrial-Grade Sensors & Transducer Components (Discrete sensing elements, transducers, MEMS sensors) (IMAGAJAO)

akta.pro secondary industries

Environmental Sensors (Temperature/Humidity/Gas/Air Quality) (HDAHALAD), Process Analytical Instrumentation (Gas analyzers, spectroscopy, pH/ORP, conductivity) (IMAGAFAE), Multi-sensor condition monitoring tags (temp+humidity+shock+location) (TLAEALAI), Cold storage facility environmental sensing (rooms, freezers, blast chillers) (TLAEALAL), Gas/air quality sensors for cold chain (CO₂/O₂/ethylene) (TLAEALAF)

Keywords

• Electrochemical gas sensors
• Hazardous gas detection
• Radiation detection sensors
• Environmental monitoring sensors
• Industrial safety sensors

Headquarters

HQ city

Irvine

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Operations, Technology or R&D, Supply Chain, Marketing or Sales

Revenue model

1. Gas and Radiation Sensors: Sale of electrochemical sensors (4-series, 7-series, 3-series, mini-series), PID sensors, NDIR sensors, radiation detection products, and sensor modules for hazardous gas and radiation detection applications

Go-to-market motion2 records

Distribution channels6 records

Marketing channels3 records

Core offering

SemeaTech designs, manufactures, and globally distributes electrochemical gas sensors (4-Series, 7-Series, 3-Series, mini-Series), Air Quality Monitoring (AQM) 4-electrode sensors, semiconductor-process 4SM-Series sensors, Photoionization Detection (PID) sensors, NDIR and LEL sensors, CsI crystal gamma and X-ray radiation sensors, and smart sensor modules with digital (I2C/UART) output. The company sells these components to OEMs, system integrators, and industrial end-users for hazardous gas detection, air quality monitoring, radiation detection, semiconductor process control, refrigeration safety, and mining applications.

Product overview

SemeaTech is a worldwide leader in sensing technologies specializing in hazardous material detection for work safety and environmental protection. The company offers a comprehensive portfolio of gas and radiation sensing products organized into three main categories: Core Electrochemical Sensors (4-Series, 7-Series, 3-Series, mini-Series, Air Quality Monitoring AQM sensors, Process Monitoring 4SM-Series, and Commercial Gas Sensors), Detection Technologies (PID sensors for VOCs, NDIR/LEL sensors for combustible gases and CO2, and Radiation Detection products), and Supporting Products (Smart Sensor Modules with digital output, Sensor Calibrators, and Accessories). The product architecture follows a platform-plus-modules approach where various sensor series share common form factors and pin-to-pin compatibility while serving different application requirements. The company has expanded into digital/IoT-enabled solutions with smart modules providing UART and I²C interfaces.

Differentiator

Problem solved

Functional benefit

Products and services

• 4-Series Gas Sensors Standard-size 4-Series electrochemical gas sensors for industrial safety and environmental monitoring, available for over 30 gas types with various suffix designations indicating special features for industrial and air quality applications.
• 7-Series Gas Sensors Larger-format electrochemical gas sensors with enhanced performance specifications compared with the 4-Series, designed for industrial safety and environmental monitoring applications.
• 3-Series Gas Sensors Compact 3-Series electrochemical gas sensors for gas detection applications including CO, SO2, NO2, and NO monitoring.
• mini-Series Gas Sensors Miniature electrochemical gas sensors designed for space-constrained applications, covering more than 30 target gases including CO, H2S, O2, SO2, NO2, NH3, and specialty gases.
• Air Quality Monitoring (AQM) Sensors 7E4-series 4-electrode electrochemical sensors designed for low-concentration air quality monitoring with ultra-high ppb-level resolution for NO, CO, H2S, SO2, NO2, O3, and NH3 detection.
• 4SM-Series Process Monitoring Sensors Semiconductor-specific electrochemical sensors for SMT and process control monitoring of PH3, SiH4, NO, O2, HF, NH3, CO, TEOS, H2S, HCL, SO2, and CL2 in semiconductor manufacturing applications.
• Commercial Gas Sensors Electrochemical sensors designed for commercial applications including CO-500, CO-1000C (UL 2075 certified for residential and commercial gas detection), CO-1000, and WC Air Quality sensors.
• PID Sensors Photoionization Detection sensors including 10.6 eV PID lamps in 1/4", 3/8", and 1/2" sizes and 4/7 Series PID sensors for VOC detection from 0-10000 ppm isobutylene, including IECEx/ATEX-certified models for explosive atmospheres.
• Sensor Modules Smart sensor modules including 4LEL-SMART-C01, mini EC-SMART, 4PID-SMART-C01, 4SMART-C01, RS485 Transmitter, and 7 SMART Module providing digital output (UART, I2C) for direct IoT and control system integration.
• Radiation Detection Products Gamma and X-ray radiation sensors using CsI crystal technology, including 3cc CsI Gamma Sensor (energy range 50 keV to 3 MeV) and Mini Gamma Sensor (energy range 30 keV to 3 MeV) for mining, security, and industrial applications.
• NDIR and LEL Sensors Non-dispersive infrared sensors including 4LEL-3.0 catalytic combustion sensor for combustible gas detection and CO2 NDIR modules (IRM300, PCL0A, IRM-203, ZM 200D, 4CO2-5000) for HVAC, air quality, and industrial applications.
• 4COCl2-3 Phosgene Sensor 4-series electrochemical sensor for phosgene (COCl2) detection with sensitivity of -0.225 ± 0.075 µA/ppm, resolution of 2 STDEV < 10 ppb, and linearity R² reaching 0.9991 within 0-3 ppm range.
• 4GeH4-1 Germane Sensor 4-series electrochemical sensor for germane (GeH4) detection, filling a critical gap in semiconductor process gas monitoring.
• 4SM SiH4-20 Silane Sensor Semiconductor process gas sensor for silane (SiH4) with ultra-high resolution of 0.05 ppm (50 ppb) and zero alcohol interference.
• NH3-L Series Long-Life Ammonia Sensors Long-life electrochemical ammonia sensors with non-depleting principle, UL-62990 certification for cold storage compressor room applications, extended warranty up to two years, and stable performance from -40°C to 40°C.
• Sensor Accessories and Calibrators Sensor calibrators and accessories including HCL-30, HF-15, HF-50, CH2O-20 calibration gas generators; Alligator Clip; EC Sensor Evaluation Kit; Calibration Cap; and EC Sensor Receptacles.

Quantifiable outcome

• SemeaTech NH3-L sensors successfully passed rigorous one-year testing for UL-62990 certification where competing sensors failed
• +2 more outcomes

Named customers4 records

Segments6 records

Ideal customer profiles6 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature8 records

Partnerships

Nine partnerships are on record, tiered key, core and supporting.

• Safe Monitoring Group (SMG)keyStrategic or Co-development Partner · 16 April 2026Leading European gas detector manufacturer established in 1990, headquartered in Vellinge, Sweden. Visit by APAC President Mr. Yu to SemeaTech Shanghai intended to consolidate cooperative partnership and explore new prospects for strategic development. SMG specializes in fixed and portable gas monitors and detection systems.
• Scout Innovations LLCcoreChannel Partner/ Reseller/ DistributorRegional distribution partner for USA market. Hosted appreciation gathering with SemeaTech during AHR EXPO 2025 with over 50 international customers attending. Awarded SemeaTech Outstanding Customer Support for the North American Market recognition.
• Scout Innovations Canada Inc.coreChannel Partner/ Reseller/ DistributorRegional distribution partner for Canada market, expanding SemeaTech's North American coverage.
• Electro Optical Components (EOC)coreChannel Partner/ Reseller/ DistributorRegional distribution partner for North Americas. Collaborated with SemeaTech at Sensors Converge 2025 for joint exhibition presence.
• Sombol Safety LtdcoreChannel Partner/ Reseller/ DistributorEuropean distribution partner. Hosted appreciation gathering during AHR EXPO 2025 with Scout Innovations and global customers.
• Dayi Japan LtdcoreChannel Partner/ Reseller/ DistributorRegional distribution partner for Asia Pacific market (Japan).
• Citisafe Pte LtdcoreChannel Partner/ Reseller/ DistributorRegional distribution partner for Asia Pacific market (Singapore).
• AMA Service GmbH (SENSOR+TEST Organizers)keyGTM or Marketing PartnerOrganizers of SENSOR+TEST exhibition conducted comprehensive evaluation of SemeaTech's technical capabilities and growth potential. AMA pledged enhanced exhibition services and promotional support for SemeaTech's global expansion. Long-time key exhibitor relationship.
• Sensor and IoT AlliancesupportingStrategic or Co-development PartnerIndustry alliance whose experts accompanied AMA delegation on visit to SemeaTech facilities, providing evaluation and guidance.

Scale indicators5 records

Recent moves6 records

Expansion highlights6 records

Emerging players

• SPEC Sensors: US-based developer of electrochemical gas sensor modules targeting IoT and air-quality applications. Comparable to SemeaTech's smart module and AQM product lines, with overlapping target customers in connected sensing.

Broad incumbents

• MSA Safety: US-listed safety equipment manufacturer with a global gas detection portfolio across fixed, portable, and detector-tube products. Overlaps with SemeaTech in industrial toxic-gas sensing applications.
• Honeywell Analytics: Honeywell's gas detection business (which absorbed City Technology) offers fixed and portable gas detectors plus sensor components. A broad incumbent whose sensor and detector portfolios overlap with SemeaTech's industrial-safety focus.
• Sensirion: Swiss sensor specialist covering gas, humidity, and flow sensing for environmental, medical, and industrial applications. Comparable to SemeaTech in gas-sensing technology and in serving IoT integration customers.
• Drager: German safety-technology company with a leading gas detection portfolio for industrial and process safety. Comparable to SemeaTech in hazardous-gas detection but operates as a broad, systems-level incumbent.

Direct peers

• Alphasense: UK-based specialist manufacturer of electrochemical and PID gas sensors targeting industrial safety, air quality, and process monitoring. Closely comparable to SemeaTech in core technology (electrochemical cells), target gases, and OEM customer profile.
• Membrapor: Swiss manufacturer of electrochemical gas sensors for industrial safety, environmental monitoring, and process control. Closely comparable to SemeaTech in technology stack, target applications, and OEM go-to-market.
• Crowcon: UK-based gas detection equipment manufacturer (part of the Halma group) producing portable and fixed gas monitors. Comparable to SemeaTech on the buyer side (sensor OEM) and adjacent on the detector-instrument side.
• FIGARO Engineering: Japanese gas sensor manufacturer with broad electrochemical, semiconductor, and NDIR product lines. Directly comparable to SemeaTech in sensor category, form factor portfolio, and global OEM distribution model.
• RKI Instruments: US-based gas detection equipment manufacturer supplying fixed and portable gas monitors that integrate third-party sensors. Directly comparable as a customer/competitor ecosystem to SemeaTech's core sensor business.

Market position

Strengths4 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/in/semeatech-marketing-920044261

Compliance9 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Subsidiaries1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about SemeaTech