Key facts
- Manuals
- 4
- Languages
- ZH
- Last added
- 2026-10-03
Featured Winsen manuals
Winsen ME2-H2 Hydrogen Gas Sensor User Manual
The Winsen ME2-H2 is a fuel‑cell type electrochemical sensor that generates a current proportional to hydrogen concentration. This manual provides the sensor’s technical specifications, recommended circuit, and performance characteristics.
Safety and handling instructions are included, such as proper installation, aging time, and restrictions on exposure to solvents, corrosive gases, and mechanical shock. Contact information for Winsen is provided for further support. This manual is written in Chinese.
Covers: Product Description · Technical Specifications · Basic Circuit Diagram · Cross‑Interference Characteristics · Precautions and Handling
Winsen MH-Z19B CO2 Sensor User Manual
This manual describes the MH‑Z19B non‑dispersive infrared (NDIR) CO₂ sensor, its features, technical specifications and recommended applications such as HVAC, air‑quality monitoring and smart home devices. It includes detailed pin definitions, output options (UART, analog, PWM) and wiring instructions.
The document also explains how to perform zero‑point and span calibrations manually or via UART commands, outlines UART communication settings, and lists safety and handling precautions to ensure reliable long‑term operation. This manual is written in Chinese.
Covers: Product Description · Technical Specifications · Pin Definitions · Output Modes · UART Interface and Commands · Calibration Procedures
Winsen MP901 Air Quality Gas Sensor User Manual
The MP901 is a planar semiconductor gas sensor designed for detecting gases such as alcohol, smoke, formaldehyde, toluene, benzene, acetone, lighter gas, and paint fumes. It uses a multilayer thick‑film process on a miniature Al₂O₃ ceramic substrate with integrated heater and metal‑oxide sensing layer, housed in a metal package.
The manual provides the sensor's electrical specifications, recommended test circuit, pin configuration, and detailed handling guidelines to ensure reliable performance and long‑term stability. This manual is written in Chinese.
Covers: Product Description · Technical Specifications · Basic Test Circuit · Pin Diagram · Precautions and Handling · Storage and Pre‑heat Requirements
Winsen MQ-4 Combustible Gas Sensor User Manual
The MQ-4 sensor uses a tin dioxide (SnO2) semiconductor material that changes its conductivity when combustible gases such as methane are present. A simple circuit converts the resistance change into an output voltage proportional to gas concentration.
The manual lists the sensor’s technical parameters, recommended heating and test voltages, output voltage range, and environmental limits. It also includes a basic test circuit, wiring guidelines, and detailed precautions for handling, storage, and operation to ensure reliable performance. This manual is written in Chinese.
Covers: Product Description · Technical Specifications · Basic Circuit · Sensor Characteristics · Precautions · Storage Recommendations
Latest Winsen manuals
Winsen ME2-H2 Hydrogen Gas Sensor User Manual
User Manual 6 pages · 506 KB · ZHUser manual for the Winsen ME2-H2 hydrogen gas sensor, covering specifications, wiring, and safety guidelines.
Winsen MH-Z19B CO2 Sensor User Manual
User Manual 8 pages · 531 KB · ZHThe Winsen MH-Z19B CO₂ sensor manual provides specifications, wiring, UART commands, calibration methods and safety guidelines.
Winsen MP901 Air Quality Gas Sensor User Manual
User Manual 7 pages · 517 KB · ZHUser manual for the Winsen MP901 air quality gas sensor, covering specifications, wiring, and handling precautions.
Winsen MQ-4 Combustible Gas Sensor User Manual
User Manual 6 pages · 524 KB · ZHThe Winsen MQ-4 combustible gas sensor manual provides product description, technical specifications, circuit diagram, and safety precautions.
Which document do I need?
User Manual
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in Winsen manuals
What is the recommended load resistance for the ME2‑H2 sensor?
The manual recommends a load resistance of 200 Ω.
How long does the sensor need to age before first use?
The sensor must be aged for at least 48 hours before use.
Which output types does the MH‑Z19B provide?
The sensor offers three output options: a UART (TTL) serial interface, an analog voltage output (0.4–2 V default, configurable to 0–3 V), and a PWM signal.
What is the recommended operating environment for the sensor?
The sensor should be kept in a well‑ventilated space, away from heat sources and direct sunlight, with supply voltage between 4.5 V and 5.5 V and a minimum current of 150 mA.
What gases can the MP901 sensor detect?
It detects alcohol, smoke, formaldehyde, toluene, benzene, acetone, lighter gas, and paint fumes.
What is the recommended pre‑heat time before using the sensor?
The sensor should be pre‑heated for at least 48 hours.