ShenzhenYijiajie Electronic Co., Ltd.
                                                                                                           
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20 Years
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Gas Sensor

China YJJ MQ137 Ammonia Sensor 5-500ppm for Household and Industrial Ammonia Alarm for sale

YJJ MQ137 Ammonia Sensor 5-500ppm for Household and Industrial Ammonia Alarm

Price: Negotiable
MOQ: 1
Delivery Time: 3 days

High sensitivity MQ137 ammonia sensor detects 5-500ppm gas. Uses SnO2 material for reliable conductivity change. Ideal for household alarms, industrial leak detection, and portable detectors. Low-cost, durable, and easy to integrate.

China NDIR Methane Gas Sensor MH-441D 0-10%Vol for HVAC Refrigeration and Air Quality Monitoring for sale

NDIR Methane Gas Sensor MH-441D 0-10%Vol for HVAC Refrigeration and Air Quality Monitoring

Price: Negotiable
MOQ: 1
Delivery Time: 3 days

Compact NDIR methane sensor with 0-10%Vol range, T90 5 year lifespan. Features UART output, IP54 protection, and intrinsic safety certification. Ideal for HVAC, refrigeration, and indoor air quality monitoring.

China YJJ ME4-SO2 Electrochemical Sulfur Dioxide Gas Sensor 0-20ppm for Industrial Environmental Protection for sale Video

YJJ ME4-SO2 Electrochemical Sulfur Dioxide Gas Sensor 0-20ppm for Industrial Environmental Protection

Price: Negotiable
MOQ: 1
Delivery Time: 3 days

ME4-SO2 is a constant potential electrolysis sensor for accurate SO2 detection. Features 0-20ppm range, ≤30s response time, high stability, and linear output. Ideal for industrial and environmental monitoring with 2-year lifespan.

China DS4-H2 Hydrogen Smart Digital Gas Sensor Solid Polymer Electrochemical 3.3-12V DC for sale

DS4-H2 Hydrogen Smart Digital Gas Sensor Solid Polymer Electrochemical 3.3-12V DC

Price: Negotiable
MOQ: 1
Delivery Time: 3-5workingdays

Low power consumption, wide 3.3-12V DC supply. Operates from -40°C to +55°C with long-term zero stability. Fast response, excellent linearity, anti-poisoning, and >3 year lifetime. Solid polymer design prevents leakage. ±5% F.S accuracy.

China NO2-B43F Nitrogen Dioxide Gas Sensor 20ppm 4-Electrode for Air Quality Monitoring for sale

NO2-B43F Nitrogen Dioxide Gas Sensor 20ppm 4-Electrode for Air Quality Monitoring

Price: Negotiable
MOQ: 1
Delivery Time: 3-5work days

High-performance 4-electrode NO2 sensor with 20ppm range and 50ppm overload. Features fast response under 60s, wide temperature tolerance, and excellent linearity. Ideal for trace air quality monitoring and gas transmitters.

China NO-A1 Nitric Oxide Gas Sensor NO Sensor 320-480 nA/ppm for Automobile Exhaust Detection for sale

NO-A1 Nitric Oxide Gas Sensor NO Sensor 320-480 nA/ppm for Automobile Exhaust Detection

Price: Negotiable
MOQ: 1
Delivery Time: 3-5work days

High-performance NO sensor with 320-480 nA/ppm sensitivity and

China YJJ TB200B-ES4-CO-1000 Solid Polymer Electrochemical Carbon Monoxide Sensor Mine Safety Monitoring Instruments for sale

YJJ TB200B-ES4-CO-1000 Solid Polymer Electrochemical Carbon Monoxide Sensor Mine Safety Monitoring Instruments

Price: Negotiable
MOQ: 1
Delivery Time: 5-8 days

Product Description: YJJ TB200B-ES4-CO-1000 Solid Polymer Electrochemical Carbon Monoxide Sensor Mine Safety Monitoring Instruments Features: Product Overview Original Model: TB200B-ES4-CO-1000-01 Sensing Probe: ES4-CO-1000 Solid-state Electrochemical Element Detected Gas: CO - Carbon Monoxide Core Principle: Solid-state polymer electrochemical technology, module includes built-in main control chip, temperature and humidity sensing unit, factory calibration and verification,

China MP905 Metal Oxide Semiconductor Air Quality Gas Sensor DC 5V for Household Environmental Detection for sale

MP905 Metal Oxide Semiconductor Air Quality Gas Sensor DC 5V for Household Environmental Detection

Price: Negotiable
MOQ: 1
Delivery Time: 3-5work days

MP905 is a high-sensitivity semiconductor gas sensor for detecting VOCs, formaldehyde, and smoke. Features temperature compensation, UART/PWM output, low power consumption, and a 5-year service life. Ideal for air purifiers and smart home ventilation systems.

China MQ138 Semiconductor Gas Sensor 5-500ppm for Domestic VOC Alarms 5V DC for sale

MQ138 Semiconductor Gas Sensor 5-500ppm for Domestic VOC Alarms 5V DC

Price: Negotiable
MOQ: 1PCS
Delivery Time: 5-8 work days

MQ138 semiconductor gas sensor detects VOCs and hydrogen from 5-500ppm. Features low power consumption ≤950mW, high sensitivity, and fast response. Ideal for domestic alarms, industrial leak detection, and portable detectors. Bakelite encapsulation ensures durability.

China Electrochemical Hydrogen Sulfide Sensor 7E4-H2S-10 0-10 ppm for H2S Gas Detection for sale

Electrochemical Hydrogen Sulfide Sensor 7E4-H2S-10 0-10 ppm for H2S Gas Detection

Price: Negotiable
MOQ: 1
Delivery Time: 5 to 8 working days

High-precision electrochemical sensor for H2S detection, range 0-10 ppm. Features fast response ≤30s, long-term stability

China G4P Series NDIR Infrared Gas Sensor for Methane CO2 Detection 0-100% LEL for sale

G4P Series NDIR Infrared Gas Sensor for Methane CO2 Detection 0-100% LEL

Price: Negotiable
MOQ: 1
Delivery Time: 3 days

G4P series infrared gas sensor uses NDIR dual-wavelength optical path for high accuracy methane and CO2 measurement. Features fast response, anti-poisoning, long life, and analog/digital output. Ideal for harsh industrial environments.

China TGS8100 Gas Sensor Surface Mount 15mW Low Power MEMS for Indoor Air Quality and Kitchen Range Hood Control for sale

TGS8100 Gas Sensor Surface Mount 15mW Low Power MEMS for Indoor Air Quality and Kitchen Range Hood Control

Price: Negotiable
MOQ: 1
Delivery Time: 3-5work days

The TGS8100 gas sensor features a surface mount package with ultra-low 15mW power consumption using MEMS technology. It offers high sensitivity to smoke, cooking odors, and air contaminants, ensuring long life and low cost. Ideal for air quality monitors, air cleaners, ventilation control, and kitchen range hoods.

China MEMS Hydrogen Sensor 0.1-1000ppm H2 GMV-2021B Ceramic Packaging for Hydrogen Energy Vehicles for sale

MEMS Hydrogen Sensor 0.1-1000ppm H2 GMV-2021B Ceramic Packaging for Hydrogen Energy Vehicles

Price: Negotiable
MOQ: 1
Delivery Time: 3 days

All-solid-state MEMS-MOS hydrogen sensor with 0.1-1000ppm detection range. Low power consumption, long life, and excellent anti-interference. Ideal for hydrogen vehicles, storage, and energy preparation. Custom options available.

China 7E4-H2S-10 Hydrogen Sulfide Gas Sensor 2ppb Resolution for Environmental Air Quality Monitoring for sale

7E4-H2S-10 Hydrogen Sulfide Gas Sensor 2ppb Resolution for Environmental Air Quality Monitoring

Price: Negotiable
MOQ: 1
Delivery Time: 3-5 work days

Ultra-high resolution 4-electrode H2S sensor with 2ppb detection and 1.5±0.5μA/ppm sensitivity. Features stable output, 2-year lifespan, and wide temperature range (-30°C to 50°C). Ideal for environmental monitoring, industrial safety, and wastewater treatment.

China 4HS+ Hydrogen Sulfide H2S Gas Sensor 2112B2025 -40 to 55C for Industrial Safety Monitoring for sale

4HS+ Hydrogen Sulfide H2S Gas Sensor 2112B2025 -40 to 55C for Industrial Safety Monitoring

Price: Negotiable
MOQ: 1
Delivery Time: 3-5 work days

High reliability 3-electrode electrochemical H2S sensor with low drift and -40 to +55C range. No bias voltage needed, easy integration. Intrinsically safe for petrochemical, mining, and confined space use. 2-year life, 5g weight.

China INIR-ME5 Integrated Infrared CO2 Gas Sensor 3.3V -40°C to +75°C for sale

INIR-ME5 Integrated Infrared CO2 Gas Sensor 3.3V -40°C to +75°C

Price: Negotiable
MOQ: 1
Delivery Time: Negotiable

Integrated infrared gas sensor with ARM7 microcontroller for reliable CO2 detection. Features low voltage 3.3V DC operation, temperature compensation, and linear output. Factory calibrated for easy installation. Ideal for industrial gas detection instruments.

China Alphasense 5NO2-B43F Nitrogen Dioxide Gas Sensor 20ppm Range Noise ±2 for Industrial Safety for sale

Alphasense 5NO2-B43F Nitrogen Dioxide Gas Sensor 20ppm Range Noise ±2 for Industrial Safety

Price: Negotiable
MOQ: 1
Delivery Time: Negotiable

High-precision NO2 sensor with 20ppm range, ±2 noise standard deviation, and 4-year lifespan. Ideal for industrial air quality and emissions monitoring.

China YJJ Thermal Conductivity HNF-H2 Hydrogen Sensor 0-100000ppm for Electric Vehicles for sale

YJJ Thermal Conductivity HNF-H2 Hydrogen Sensor 0-100000ppm for Electric Vehicles

Price: Negotiable
MOQ: 1
Delivery Time: Negotiable

Compact and energy-efficient hydrogen sensor with 4 year sensor life, digital output, and customizable options for reliable gas detection.

China MP135 Semiconductor Gas Sensor for Indoor Air Quality Monitoring Detect CO Alcohol H2 5V for sale

MP135 Semiconductor Gas Sensor for Indoor Air Quality Monitoring Detect CO Alcohol H2 5V

Price: Negotiable
MOQ: 1
Delivery Time: 3-5 work days

The MP135 is a planar semiconductor gas sensor for detecting CO, alcohol, and hydrogen. It features low power consumption ≤300mW, a 5V heating voltage, and a detection range of 10-1000 ppm. Ideal for air purifiers and exhaust systems, it offers reliable performance and easy integration.

China GA-PFMAX XT-RF-H5 Particulate Pump Filter Replacement 5 Pack For GasAlert Max XT II for sale

GA-PFMAX XT-RF-H5 Particulate Pump Filter Replacement 5 Pack For GasAlert Max XT II

Price: Negotiable
MOQ: 1
Delivery Time: 3-5workingdays

High-efficiency particulate pump filter replacement for GasAlert Max XT II. Kit of 5 ensures reliable remote sampling in confined spaces. Durable, easy to install, and compatible with MicroDock II for automated calibration.