The GD-801 4-in-1 Gas Detector is a professional-grade, portable multi-gas monitoring device designed for industrial safety, confined space entry, and hazardous environment operations. Engineered with high-strength engineering plastic and a high-sensitivity gas sensor array, this compact yet rugged device simultaneously monitors four critical gases — Carbon Monoxide (CO), Hydrogen Sulfide (H₂S), Combustible/Explosive Gas (Ex), and Oxygen (O₂) — ensuring real-time awareness of atmospheric hazards.

Featuring a 2.4" IPS colour screen, the GD-801 delivers crystal-clear readings with real-time data graph analysis for trend monitoring. The built-in 3000mAh Li-ion battery provides extended field operation, while the integrated air pump enables pump detection mode with an external gas pipe and multi-function detection handle for remote or hard-to-reach sampling. With 400 sets of data storage, voice broadcast alerts, and triple alarm modes (sound, light, and vibration), this detector is your reliable safety companion in refineries, chemical plants, sewers, mines, and construction sites.

IP54-rated for dust and water resistance, and designed to be explosion-proof, the GD-801 combines durability with precision — because safety should never be compromised.

Technical Specifications

Key Features

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  4-in-1 Multi-Gas Detection — Simultaneously monitors CO, H₂S, Ex, and O₂ concentrations in real-time for comprehensive atmospheric safety.


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  2.4" IPS Colour Display — Bright, high-resolution colour screen with intuitive interface and real-time data graph analysis for easy trend interpretation.


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  Multi-Mode Alarm System — Triple alarm with loud sound, bright LED light, strong vibration, and voice broadcast to ensure alerts are never missed even in noisy environments.


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  Built-in Air Pump — Enables pump detection mode; connect an external gas pipe and multi-function detection handle for remote sampling in confined or elevated spaces.


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  400 Sets Data Logging — Stores up to 400 sets of historical data for compliance reporting, incident review, and safety audits.


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  Long-Lasting 3000mAh Battery — Rechargeable Li-ion battery with USB Type-C charging for extended field use and quick power-ups.


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  IP54 & Explosion-Proof Design — Rugged high-strength engineering plastic body resists dust, water splashes, and explosive atmospheres.


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  Ultra-Portable — Weighs only 318g with a compact form factor; includes a cloth carry bag for easy transport and field deployment.

Frequently Asked Questions (FAQs)

Q1: What gases can the GD-801 detect?

The GD-801 is a 4-in-1 gas detector that monitors Carbon Monoxide (CO), Hydrogen Sulfide (H₂S), Combustible/Explosive Gas (Ex), and Oxygen (O₂) levels simultaneously.

Q2: How does the pump detection feature work?

The device has a built-in air pump that actively draws air samples through an external gas pipe and multi-function detection handle. This allows you to safely test gas concentrations in confined spaces, tanks, or areas that are difficult to access directly.

Q3: What happens when gas concentration exceeds safe limits?

The GD-801 triggers a multi-mode alarm — loud audible beep, bright flashing LED light, strong vibration, and a voice broadcast — to alert you immediately so you can evacuate or take corrective action.

Q4: How much data can the device store?

It can store up to 400 sets of data, allowing you to review historical readings and generate trend graphs directly on the 2.4" IPS colour screen.

Q5: Is this device suitable for outdoor and industrial use?

Yes. With an IP54 rating, the GD-801 is dustproof and protected against water splashes. It is also explosion-proof and built from high-strength engineering plastic, making it ideal for refineries, chemical plants, mines, sewers, and construction sites.

Q6: What is the battery life and how is it charged?

The GD-801 is powered by a 3000mAh rechargeable Li-ion battery (3.8V) and charges conveniently via the included USB Type-C cable. Battery life varies based on usage and alarm frequency.