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Electrochemical H2S Hydrogen Sulfide Gas Sensor FS01700

  • H2S detection sensor

  • Support UART and MODBUS-RS485

  • Three-electrode electro-chemical sensor

  • Outstanding anti-interference

  • Temperature compensation

  • Reliable service for sustainable cooperation

Electrochemical H2S Hydrogen Sulfide Gas Sensor FS01700 Introduction

FS01700 is a fuel cell type electrochemical sensor that works by the oxidation and reduction reactions on the working electrode and counter electrode, releasing charges to form a current. The magnitude of the current generated is proportional to the concentration of hydrogen sulfide and follows Faraday’s law. By testing the magnitude of the current, the hydrogen sulfide concentration can be determined. It uses a high-stability gas sensor and a high-performance microprocessor that supports UART output and Modbus-RS485 output for easy use. The module adopts precise automatic calibration and detection equipment, reducing human interference and ensuring the accuracy and consistency of data during large-scale production.

Electrochemical H2S Hydrogen Sulfide Gas Sensor FS01700 Features

1.Detection range

Default: 0~10PPM


2.High accuracy, high consistency, high solution, rapid response

Data detection accuracy: ±≤5% reading

Minimum solution: 0.1 ppm

Response time: T90 ≤30s


3.Data output methods

FS01700 supports UART and MODBUS-RS485


4.Long service life

The lifetime is up to 2 years (in the air)


5.High detection frequency

The data updates once per second by default.


1.Gas detectors, instrumentation equipment
2.Ventilators, medical and health equipment
3.Safety monitoring of industrial mines, tunnels, etc.
4.Farms, Smart Agriculture and Animal Husbandry


Parameter type

Parameter index

Detection Type

H2S Gas

Detection Principle

Three-electrode electro-chemical

Detection Range




Max Load


Detection Accuracy



Data Accuracy

Max error ≤2% Reading

Operation Voltage

DC 3.7V~5.5V

Operation Current

≤0.3mA (@5V power supply)

Warm-up Time

3 min

Detection Frequency

The data is updated once per second (Default)

Output Methods

 Default: UART (3.3V_TTL Voltage level)

Reserve: MODBUS-RS485

Customizable: 4~20mA、0~5V、0~10V

Service Life

2 Years (in the air)

Reference Dimension

32.3×32.3×16.5 mm

Operation Temperature

-10℃~ 50℃

Operation Humidity

0~95%RH (Non-Condensation)

Storage Temperature

-20℃~ 60℃

Storage Humidity

0~95%RH (Non-Condensation)

Pressure Range

800~1200 mbar

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