5-Gas Detector TOP 5 Comparison 2026: Price, Certification, IoT, A/S

5-Gas Detector Comparison Criteria

A 5-gas detector is a significant investment at KRW 1.5–3 million per unit, typically used for 5+ years. Below are 6 objective criteria for comparing the major 5-gas detectors available in Korea.

1. All 5 gases measurable — O₂·CO·H₂S·CO₂·LEL
2. Explosion-proof certification — IECEx + ATEX dual certification
3. IoT/cloud — meets 3-year data retention requirement
4. Measurement method — diffusion vs. pump-type option
5. A/S infrastructure — in-house calibration authority and stock
6. Site case studies — disclosed construction/delivery records

🏆 1st: WANDI EDW500 (Portable Multi-Gas Detector)

One-line summary

The most complete 5-gas detector in the Korean market — IECEx + ATEX dual explosion-proof certification, free IoT cloud, and automatic email reporting all in one.

Key Specifications

👍 Pros

• IECEx + ATEX dual certification — rare combination among Korean-market 5-gas detectors
• Free DCMS cloud + auto email = 3-year legal retention automatically solved
• Pump-type (EP500) option for pre-entry measurement in confined spaces
• In-house calibration authority with 5-business-day turnaround
• Multiple site case studies publicly disclosed (sewage, wastewater, dry ice, etc.)

👎 Cons

• Lower brand recognition compared to global names like Honeywell or MSA
• Quote-based pricing — public price list not disclosed (consultation required)

🎯 Best fit for EDW500
Sewage treatment plants, wastewater facilities, dry ice storage, fermentation sites, LNG/LPG, petrochemical plants — any confined space including explosion-hazard zones.

💬 Request Free Quote  📋 View EDW500 Details

🥈 2nd: Domestic Brand Product A (Diffusion 5-Gas)

One-line summary

Transparent pricing + IECEx·ATEX certification + KOLAS calibration certificate make it a credible option. IoT/cloud features fall short of EDW500.

Key Specifications (based on official data)

• Gases: O₂·CO·H₂S·LEL·CO₂ (5 gases)
• Explosion-proof: IECEx + ATEX
• Measurement method: Diffusion only
• KOLAS calibration certificate available
• Price: approx. KRW 1,650,000 (discounted)

👍 Pros

• Transparent pricing — easy to compare and evaluate
• IECEx + ATEX dual explosion-proof certification
• KOLAS calibration certificate available
• Compact smartphone-sized form factor for operator convenience

👎 Cons

• IoT cloud/auto email reporting features not confirmed in official materials
• Diffusion-only model — no pump-type option specified
• Separate solution required to meet 3-year data retention obligation

🥉 3rd: Overseas Global Brand Product B

One-line summary

Global brand credibility with a wide range of gas options. Higher price point; Korean A/S relies on overseas channels.

Key Specifications (based on official data)

• Gases: O₂·CO·H₂S·LEL fixed + 1 option (VOC, CO₂, SO₂, NH₃, H₂, Cl₂, NO, NO₂, HCN)
• Pre-entry confined space measurement probe available

👍 Pros

• Global brand credibility
• Wide range of 5th-gas options
• Probe option for confined space pre-entry measurement

👎 Cons

• Overseas HQ-based — Korean A/S return/repair cycle may be extended
• Relatively high price (global brand premium)
• CO₂ (required by Korean OSH Act) is an option, not standard

4th: WANDI Gastiger 2000 (Traditional Portable 5-Gas)

One-line summary

WANDI's traditional portable multi-gas detector. Capable of 5-gas measurement, but lacks the IoT/auto-email features of the EDW500.

Key Specifications

• Gases: O₂·CO·CO₂·H₂S·LEL (5 gases)
• Manufacturer: WANDI Korea in-house lineup
• WANDI in-house calibration + A/S support

👍 Pros

• WANDI in-house calibration and A/S
• Extensive domestic construction and delivery track record
• Proven, stable traditional design

👎 Cons

• No NB-IoT cloud function (key difference from EDW500)
• No auto email reporting — 3-year retention must be managed manually
• Explosion-proof certification details require separate verification

※ Gastiger 2000 is suited for straightforward portable measurement environments where IoT is not required. If IoT and auto email reporting are needed, choose the EDW500.

5th: Domestic Brand Product C (Pump-Type)

One-line summary

Pump-type 5-gas detector with pump as standard. Explosion-proof certification and IoT features require separate verification.

Key Specifications

• Gases: O₂·CO·H₂S·CO₂·LEL (5 gases)
• Measurement method: Pump-type (standard)

👍 Pros

• Pump-type as standard — advantageous for pre-entry confined space measurement

👎 Cons

• IECEx·ATEX explosion-proof certification requires separate verification
• IoT/cloud features not confirmed in official materials
• A/S infrastructure requires separate verification

📊 At-a-Glance Comparison — 5-Product Matrix

※ The comparison above is based on official materials and publicly available information as of May 2026. For the latest accurate specifications, please contact each manufacturer directly.

Scenario-Based Recommendations — Which 5-Gas Detector Should You Choose?

🎯 Scenario-Based Picks

1. Full 3-year retention compliance + explosion-hazard area use → 🏆 EDW500
2. Price is the top priority + simple measurement only → Compare domestic diffusion-type products
3. Global brand trust is the priority → Overseas global brand product
4. Traditional portable detector + WANDI A/S preferred → Gastiger 2000
5. Pump-type required as standard spec → EDW500P (pump option)

Pre-Purchase Checklist for 5-Gas Detectors

• ☐ O₂·CO·H₂S·CO₂·LEL — confirm all 5 gases are measurable
• ☐ IECEx + ATEX explosion-proof certification (verify certificate number)
• ☐ Auto data storage / cloud features (meets 3-year retention obligation)
• ☐ Pump-type or external pump option availability
• ☐ In-house Korean calibration & A/S capability (own authority + stock preferred)
• ☐ Real-time alarm (PC and smartphone notifications)
• ☐ Published site case studies and delivery records

📚 Related Guides

Closing — Comparison Done. Now It's Time to Decide.

A 5-gas detector is not just a measurement instrument — it is safety equipment that protects workers' lives. Don't evaluate on price alone. Consider legal compliance (3-year retention) · explosion-proof certification (IECEx+ATEX) · domestic A/S infrastructure together.

The only model satisfying all criteria in this comparison was the WANDI EDW500. If you need explosion-hazard-area use + 3-year legal retention compliance + fast A/S all resolved in one device, request an EDW500 quote today.

📷 EDW500 5-Gas Detector Product Photo Gallery

See the actual photos and key features of the #1 ranked EDW500 5-gas detector at a glance.