Miniature Planar Structure
Uses a subminiature Al₂O₃ ceramic hot plate in a Ø9.4 mm package.
MP-9 Miniature Semiconductor CO and CH4 Gas Sensor
The MP-9 is a miniature flat-surface metal-oxide semiconductor sensor for carbon monoxide and methane. Its planar ceramic structure and cyclic heater provide dual-gas sensitivity in a compact Ø9.4 mm package.
BrandWinsen
Sensing PrincipleSemiconductor
Target GasCO, CH4
Product TypeFlat-Surface Semiconductor Gas Sensor
Gas Sensing for OEM Integration
Product Overview
A small, low-cost CO and CH4 sensor for domestic, industrial and portable gas alarms.
The sensor detects CO during the low-temperature heater phase and responds to CO and methane during high-temperature operation while cleaning the sensing surface.
The conductivity change can be converted into a concentration-related output with a simple external circuit.
Designed for Reliable Integration
Key Features
CO and CH4 Sensitivity
Covers 50–1000 ppm CO and 300–10,000 ppm methane.
Low Heater Power
Specified heater consumption is 240 mW or less.
Simple Interface Circuit
Sensor resistance can be measured through a basic load circuit.
Long-Life Semiconductor Material
Designed for high-volume gas alarm products.
Cost-Effective Integration
Suitable for compact and price-sensitive safety equipment.
Typical Use Cases
Applications
Domestic CO Leakage Alarms
Industrial CO Alarms
Portable CO Detectors
Compact Dual-Gas Safety Devices
Official Product Parameters
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | MP-9 |
| Detected Gases | Carbon monoxide (CO), methane (CH4) |
| Detection Principle | Flat-surface metal-oxide semiconductor |
| CO Detection Range | 50–1000 ppm |
| CH4 Detection Range | 300–10,000 ppm |
| Loop Voltage | ≤10 V |
| High-Temperature Heater Voltage | 5.0±0.1 V |
| Low-Temperature Heater Voltage | 1.5±0.1 V |
| Heater Consumption | ≤240 mW |
| Dimensions | Ø9.4 × 7.5 mm |
Specifications are based on the official Winsen product page or product manual. Confirm the latest datasheet, calibration requirements, communication protocol and mechanical drawing before final product design.
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