Featured · Solid-polymer Electrochemical

EC Sense

Solid-polymer electrochemical sensors

Solid-polymer electrochemical sensors for toxic and harmful gases — fast response, stable lifespan. AG1 series offers a low-cost VOC/TVOC alternative to PID.

Solid-polymer electrolyte — no liquid leakage risk
High selectivity with strong cross-interference resistance
Designed lifetime > 3 years, drift < 5%/year
nA-level current, ideal for portable & fixed devices
AG1 all-gas series equivalent to VOC/TVOC detection
DS4 smart series with UART digital output & factory calibration

Selection Guide

Which EC Sense Product Do You Need?

EC Sense ships six distinct product lines that differ sharply in form factor — from a few-millimetre bare cell to a fully assembled 4–20 mA transmitter module. Match the line to your development stage and to where the data has to go; picking the wrong form factor costs far more than picking the wrong range.

Your requirement You build your own instrument, have in-house electronics and calibration, and need the lowest cost per point

AG1 / ES1 / ES4 Bare Sensor Cells

Compact SMD package with nanoamp analog output — the lowest cost per point, and the standard choice for high-volume in-house instrument designs.

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Your requirement You want to avoid analog circuitry, need a digital concentration value, and prefer something that works on power-up

DS4 Smart Digital Series

UART 3.3 V digital output, factory-calibrated, with no secondary gas calibration — read concentration in ppm directly.

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Your requirement You are building a finished detector or online monitoring system and need a ready-made detection module with temperature and humidity sensing

TB600B&C Smart Detection Modules

19 gas types, 38 models and 108 order numbers, with built-in temperature and humidity sensing, dual UART and I²C interfaces, and under 5 mA working current.

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Your requirement You need VOC / TVOC measurement but a PID's price and UV lamp replacement cost are out of reach

AG1 All-Gas Series (VOC/TVOC equivalent)

An electrochemical approach to equivalent VOC/TVOC detection at typically under a third of PID module cost, with no UV lamp consumable. If you need broad-spectrum ppb-level scanning, or methane and halogenated VOCs, a PID is still the right answer.

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Your requirement The measuring point has to feed a 4–20 mA channel on a PLC or DCS, over a long run and in a noisy environment

TB420 4–20 mA Smart Transmitter Modules

A two-wire 4–20 mA standard current loop with fault output, supplied at 9 – 24 V DC and drawing under 0.6 W. 25 gas types, 47 models and 118 order numbers — and the only EC Sense module line carrying silane, diborane and germane.

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Your requirement You need oxygen, chlorine, bromine, hydrogen chloride or hydrogen fluoride — or the head must reach into a cabinet or pipe rack on a cable

TB200B Industrial Safety Modules

23 gas types across 136 models — six more than the TB600B&C: oxygen, bromine, chlorine dioxide, fluorine, hydrogen chloride and hydrogen fluoride. A 40 × 30 mm board on a 100 mm four-pin cable, with ES1 / ES4 / EC4 cell options.

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Not sure which line fits? Send us the target gas, required range and device format — we will give you a straight recommendation, not the most expensive one.

Product Families

EC Sense Product Families

Locate the right sensor model by target gas and application scenario.

AG1 All-Gas / VOC Series

Electrochemical sensors equivalent to VOC/TVOC detection — a low-cost alternative to PID, covering 10 / 200 / 1000 / 2000 ppm ranges.

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Dedicated Gas Sensors

Covering CO, H₂S, O₂, NO₂, SO₂, NH₃, H₂, ETO, PH₃, HCN, HCHO, C₂H₂, C₂H₄, CH₄S, O₃ and 20+ industrial & environmental gases.

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DS4 Smart Digital Sensors

Printed solid-polymer electrochemical with UART 3.3V digital output; factory-calibrated, plug-and-play, no secondary gas calibration.

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TB600B&C Detection Modules

Smart digital gas detection modules with built-in temp/RH sensing, UART/I²C output and factory calibration. The full range covers 19 gas types across 38 models — including CO, H₂S, H₂, NH₃, O₃, NO₂, SO₂, Cl₂, HCHO, HCN, PH₃, TVOC and odour gases, with ranges from ppb level up to 10,000 ppm.

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TB200B Industrial Safety Modules

A 40 × 30 mm board on a 100 mm four-pin cable, letting the head sit away from the controller. Covers 23 gas types across 136 models — six more than the TB600B&C, adding oxygen, bromine, chlorine dioxide, fluorine, hydrogen chloride and hydrogen fluoride. ES1 / ES4 / EC4 cell options, both UART (TTL 3.3 V) and I²C versions, drawing 40 mW at 5 V.

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TB420 4–20 mA Smart Transmitter Modules

A two-wire 4–20 mA standard current loop with fault output, supplied at 9 – 24 V DC and drawing under 0.6 W — two wires straight into a PLC or DCS. Covers 25 gas types, 47 models and 118 order numbers, including the semiconductor specialty gases silane, diborane and germane: the only module line in the EC Sense catalogue that offers these three hydrides.

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All Products

All EC Sense Products

Products

A data-driven catalog covering featured brands such as EC Sense, Shanghai Yixin and Ningbo Xingpu. Narrow by brand first, then by target gas — each detail page includes full specifications and a downloadable datasheet.

340 products

EC Sense

Which EC Sense Product Do You Need?

AG1 / ES1 / ES4 Bare Sensor Cells

DS4 Smart Digital Series

TB600B&C Smart Detection Modules

AG1 All-Gas Series (VOC/TVOC equivalent)

TB420 4–20 mA Smart Transmitter Modules

TB200B Industrial Safety Modules

EC Sense Product Families

AG1 All-Gas / VOC Series

Dedicated Gas Sensors

DS4 Smart Digital Sensors

TB600B&C Detection Modules

TB200B Industrial Safety Modules

TB420 4–20 mA Smart Transmitter Modules

All EC Sense Products

ES1 Series 36 models

ES1-AG1-10 All-Gas / VOC Sensor

ES1-AG1-200 All-Gas / VOC Sensor

ES1-AG1-1000 All-Gas / VOC Sensor

ES1-AG1-2000 All-Gas / VOC Sensor

ES1-AsH3-1 Arsine Gas Sensor

ES1-CH4S-10 Methyl Mercaptan Gas Sensor

ES1-CH4S-100 Methyl Mercaptan Gas Sensor

ES1-CO-10 Carbon Monoxide Gas Sensor

ES1-CO-100 Carbon Monoxide Gas Sensor

ES1-CO-1000 Carbon Monoxide Gas Sensor

ES1-ETO-10 Ethylene Oxide Gas Sensor

ES1-ETO-1000 Ethylene Oxide Gas Sensor

ES1-ETO-200 Ethylene Oxide Gas Sensor

ES1-H2-1000 Hydrogen Gas Sensor

ES1-H2-5% Hydrogen Gas Sensor

ES1-H2-5000 Hydrogen Gas Sensor

ES1-H2S-10 Hydrogen Sulfide Gas Sensor

ES1-H2S-100 Hydrogen Sulfide Gas Sensor

ES1-H2S-500 Hydrogen Sulfide Gas Sensor

ES1-H2S-5000 Hydrogen Sulfide Gas Sensor

ES1-HCHO-100 Formaldehyde Gas Sensor

ES1-HCHO-5 Formaldehyde Gas Sensor

ES1-NH3-100 Ammonia Gas Sensor

ES1-NO2-100 Nitrogen Dioxide Gas Sensor

ES1-NO2-1000 Nitrogen Dioxide Gas Sensor

ES1-NO2-2000 Nitrogen Dioxide Gas Sensor

ES1-NO2-50 Nitrogen Dioxide Gas Sensor

ES1-O2-25% Oxygen Gas Sensor

ES1-O3-100 Ozone Gas Sensor

ES1-O3-5 Ozone Gas Sensor

ES1-PH3-20 Phosphine Gas Sensor

ES1-SO2-100 Sulfur Dioxide Gas Sensor

ES1-SO2-1000 Sulfur Dioxide Gas Sensor

ES1-SO2-5 Sulfur Dioxide Gas Sensor

ES1-SO2-50 Sulfur Dioxide Gas Sensor

ES1-SiH4-50 Silane Gas Sensor

ES4 Series 35 models

ES4-AG1-10 All-Gas / VOC Sensor

ES4-AG1-200 All-Gas / VOC Sensor

ES4-AG1-1000 All-Gas / VOC Sensor

ES4-AG1-2000 All-Gas / VOC Sensor

ES4-AsH3-1 Arsine Gas Sensor

ES4-CH4S-10 Methyl Mercaptan Gas Sensor

ES4-CH4S-100 Methyl Mercaptan Gas Sensor

ES4-CO-100 Carbon Monoxide Gas Sensor

ES4-CO-1000 Carbon Monoxide Gas Sensor

ES4-ETO-10 Ethylene Oxide Gas Sensor

ES4-ETO-1000 Ethylene Oxide Gas Sensor

ES4-ETO-200 Ethylene Oxide Gas Sensor

ES4-H2-1000 Hydrogen Gas Sensor

ES4-H2-5% Hydrogen Gas Sensor

ES4-H2-5000 Hydrogen Gas Sensor

ES4-H2S-10 Hydrogen Sulfide Gas Sensor

ES4-H2S-100 Hydrogen Sulfide Gas Sensor

ES4-H2S-500 Hydrogen Sulfide Gas Sensor

ES4-H2S-5000 Hydrogen Sulfide Gas Sensor

ES4-HCHO-100 Formaldehyde Gas Sensor

ES4-HCHO-5 Formaldehyde Gas Sensor

ES4-NH3-100 Ammonia Gas Sensor

ES4-NO2-100 Nitrogen Dioxide Gas Sensor

ES4-NO2-1000 Nitrogen Dioxide Gas Sensor

ES4-NO2-2000 Nitrogen Dioxide Gas Sensor

ES4-NO2-50 Nitrogen Dioxide Gas Sensor