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    Gas Sensor

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    CO Sensor Module, 0-500ppm, UART Output

    SUCH-COS-ZE07
    ● 0-500ppm ● UART/voltage output ● 5V~12V working voltage ● 0.1ppm CO resolution
    $67.12

    Hydrogen Sulfide (H2S) Gas Sensor, 0-50ppm~5000ppm

    SUCH-GAS-H2S
    ● Detect: Hydrogen sulfide sensor ● Rang: 0-50ppm~5000ppm ● Electrochemical three-electrode ● Resolution: 0.1 ppm
    $141.62

    Ultrasonic Oxygen Sensor, 21-95.6%, Long/Short Type

    SUCH-O2S-F1010
    ● Detect: Oxygen (O2) ● Concentration: 21-95.6% ● Flow: 0 to 10 L/min ● Long/short type optional
    $48.99

    Formaldehyde (CH2O) Gas Sensor, RS485/TTL

    SUCH-GAS-CH2O
    ● Detect: Formaldehyde (CH2O) ● Rang: 0-10ppm ● Interface: RS485, TTL ● Resolution: 0.1 ppm
    $165.71

    IR CO2 Transmitter with Display, 0-2000/5000/10000ppm

    SUCH-CO2-3002
    ● 0-2000/5000/10000ppm ● With display screen ● RS485 output signal ● 1ppm CO resolution
    $146.32

    Oxygen Gas Transmitter with Display, 0-30%Vol/0-25%Vol

    SUCH-O2S-3002
    ● Detect: Oxygen (O2) ● 0-30%Vol/0-25%Vol ● RS485/4-20mA/0-5V/0-10V ● 10~30V DC/24V DC
    $117.58

    Smart Carbon Monoxide Sensor, 0-999ppm

    SUCH-COS-24E
    ● 0-999ppm, EU plug ● CO, temp & humidity, flammable gas ● Input: 100~240V 50/60Hz ● GAS Lv1–4 Lv4 (15% LEL)
    $70.29

    Ammonian (NH3) Gas Sensor with Module, 0-100ppm~1000ppm

    SUCH-GAS-NH3
    ● Detect: Ammonian (NH3) ● Rang: 0-100ppm~1000ppm ● Interface: RS485, TTL, 4-20mA ● Resolution: 1 ppm
    $269.68

    Infrared CO2 Sensor, 0-5000ppm, TTL/RS485

    SUCH-CO2-4NCO2
    ● 0-5000ppm rang ● TTL/RS485 module output ● Temperature compensation ● IP54 protection level
    $328.68

    Mini Oxygen Sensor, 0-30%, 3 Electrode

    SUCH-O2S-01
    ● Detect: Oxygen (O2) ● 0-30% linear output ● 0.085±0.02 mA (in air) ● 30~100% nonlinear output
    $158.93

    Wireless Carbon Monoxide Sensor, 0-1000ppm

    SUCH-COS-S01
    ● 0~1000ppm (±10%) ● 50ppm default alarm rang ● 3.7V, 1000mA battery ● DC 5V~24V Type-C input
    $89.59

    CO Detection Sensor, 0-300ppm, RS485/0-10V

    SUCH-COS-CODS
    ● 0-300ppm ● Electrochemical detection ● Relay output, RS485, 0-10VDC ● 24V DC/AC power input
    $315.29

    CO2 Sensor Probe, 0-10000ppm

    SUCH-CO2-MG812
    ● 0-10000 ppm CO₂ ● Metal shell package ● Heating voltage 5.0 ± 0.1 V ● Output signal EMF
    $65.29

    Phosphine (PH3) Gas Sensor, RS485/TTL Module Output

    SUCH-GAS-PH3
    ● Detect: Phosphine (PH3) ● Rang: 0-20ppm ● Interface: RS485, TTL ● Resolution: 0.1 ppm
    $198.99

    Trace Oxygen Sensor, 0-10ppm to 0-10000ppm

    SUCH-O2S-AOP10
    ● Detect: Oxygen (O2) ● 0–10ppm (Min), 0–10,000ppm (Max) ● 295~700 μA (in air) ● Shared-voltage electrochemical
    $277.06

    Lead Free Oxyge Sensor with Temperature Compensation

    SUCH-O2S-AOX3100
    ● Detect: Oxygen (O2) ● 0~100% linear output ● 9~14 mV (in air) ● Shared-voltage electrochemical
    $95.73

    PID Gas Sensor for Benzene (C6H6), 0-10000ppm

    SUCH-GAS-C6H6
    ● Detect gas: Benzene (C6H6) ● Rang: 0-10000ppm ● Photoionization Detection ● Resolution: 1ppb~2ppm
    $667.59

    Thermal Conductivity CO2 Sensor, 0-100%Vol

    SUCH-CO2-MD62
    ● 0-100%Vol ● Exd IIB I explosion-proof ● 3.0 ± 0.1 VDC working voltage ● -40°C ~ +70°C, humidity ≤ 95% RH
    $102.21

    CO2 Concentration Sensor, 0-10000ppm

    SUCH-CO2-MG811
    ● 0~10000ppm CO2 ● 6.0 ± 0.1V heating voltage ● 35.0 ± 3.0Ω heating resistance ● Plastic-sealed metal case
    $86.97

    Medical Oxygen Sensor, 0-100%, Molex 3 Pin/Headphone Jack

    SUCH-O2S-AO6789
    ● 0~100% linear output ● 3.55mm TRS/Molex 3 Pin ● P/N 5520257-2 Interface ● Shared-voltage electrochemical
    $99.41

    Gas sensors serve as critical core components for environmental safety and industrial control, enabling precise detection of changes in airborne gas concentrations. They find extensive applications across petrochemical processing, laboratory monitoring, gas alarms, environmental testing, and smart home systems. SUCH offers diverse gas sensor types, including high-performance models for detecting liquefied petroleum gas (LPG), propane, methane, hydrogen, carbon monoxide, ozone, and VOCs. These cover varying requirements from low-concentration leak alarms to high-precision industrial monitoring.

    All gas sensors are engineered using electrochemical, semiconductor, or infrared principles, delivering high sensitivity, low power consumption, rapid response, and strong anti-interference capabilities. Their metal-encapsulated structure ensures stable operation in high-humidity, high-temperature, or complex environments, with some models boasting a lifespan of up to 10 years. Whether integrated into industrial equipment or deployed for scientific research and environmental monitoring, SUCH gas sensors provide reliable data support and safety assurance.

    Choosing SUCH means choosing a dependable safety monitoring partner. We prioritize technological innovation and adhere to stringent manufacturing standards to guarantee precision and consistency in every sensor. Browse this catalog to discover gas sensor solutions tailored to your applications. Experience the new standard in industrial detection—high sensitivity and stability—adding enduring power to your safety control systems.