YJJ ZCE04B Multi Gas Sensor Module CO H2S O2 CH4 for Mining & Petrochemical Gas Alarm

Product Description:

YJJ ZCE04B Multi Gas Sensor Module CO H2S O2 CH4 for Mining & Petrochemical Gas Alarm

Features:

ZCE04B Four-in-One Multi-in-One Gas Detection Module Parameter Description

Principle: Electrochemical + Catalytic Combustion Composite Principle, integrating four sensors for CO, H2S, O2, and CH4, an integrated signal processing board, **UART digital serial port output**, and simultaneously outputting the concentrations of 4 gases, used for industrial portable/fixed four-in-one gas detection instruments

Gas Detection Parameters

| Detected Gas | Measurement Range | Resolution | Detection Principle |
| --- | --- | --- | --- |
| CO Carbon Monoxide | 0 - 1000 ppm | 1 ppm | Electrochemical |
| H2S Hydrogen Sulfide | 0 - 100 ppm | 1 ppm | Electrochemical |
| O2 Oxygen | 0 - 30 % VOL | 0.1 % VOL | Electrochemical |
| CH4 Methane (flammable) | 0 - 100 % LEL | 1 % LEL | Catalytic Combustion |

Electrical and Communication Parameters

- Supply Voltage: **3.5 - 5 VDC**
- Working Current: < 100 mA
- Signal Output: **UART Serial Port (2.8V TTL Level)**
- Baud Rate: 9600, 8N1 (8 Data Bits, 1 Stop Bit, No Parity)
- Communication Mode: Active Upload (Concentration Pushed Once Every 1 Second) / Question-and-Answer Query Mode Switchable
- Response Time: < 30s

Environmental and Mechanical Parameters

- Working Temperature: **-20℃ ~ +50℃**
- Working Humidity: 15 - 90% RH (No Condensation)
- Storage Temperature: Recommended 0 - 20℃
- Dimensions: 41 × 41 × 21.6 mm
- Expected Lifespan: 2 Years (Clean Air Environment)

Product features

1. The four-in-one integrated module can simultaneously detect toxic gases + oxygen + combustible methane, simplifying hardware development.
2. Digital UART output, directly outputs concentration values, without the need for complex signal calibration operations.
3. Two communication modes are available, suitable for both handheld detectors and fixed transmitters.
4. Diffusive intake, with good selectivity and high stability.
5. Integrated calibration at factory, allowing customers to directly conduct secondary development, significantly shortening the development cycle.

Typical application

1. Portable four-in-one gas detector (for mining, confined space, underground operations)
2. Industrial fixed gas alarm transmitters, construction site safety monitoring
3. Municipal pipeline, sewage well, storage tank confined space gas safety monitoring
4. Petroleum chemical, metallurgy, tunnel environmental gas detection and alarm equipment

Specifications: