Bartec SP9EX1 vs Ecom Smart-Ex 03 DZ1: 2026 Zone 0/1 Comparison

Not every intrinsically safe smartphone comparison is a toss-up between equally certified devices — and this is one where that distinction actually matters. The Bartec SP9EX1 and the Ecom Smart-Ex 03 DZ1 both target continuous or frequent explosive-atmosphere areas, but they don’t cover the same zone. The SP9EX1 is certified for Zone 0/1, the most demanding classification a handheld device can reach. The Smart-Ex 03 DZ1 stops at Zone 1/21. If your site requires Zone 0 coverage, that’s not a matter of preference — it’s the one spec that eliminates one of these two phones before price or camera resolution even enter the conversation.

ATEX Category 1 vs. Category 2: Why Zone 0 Coverage Isn’t Automatic

ATEX Directive 2014/34/EU assigns Category 1 equipment to Zone 0 — areas where an explosive atmosphere is present continuously or for long periods — and Category 2 equipment to Zone 1, where it occurs occasionally under normal operation. IEC 60079-11 sets the intrinsic-safety sub-levels that separate the two: “ia” protection is required for Zone 0, while the ‘ib’ level is sufficient for Zone 1. The Bartec SP9EX1 is certified ATEX Zone 0/1 (II 1G Ex ia IIC T4 Ga), IECEx Ex ia IIC T4 Ga, and CSA Class I Division 1 (Groups A-D) — the “ia” marking confirms Zone 0 eligibility. The Ecom Smart-Ex 03 DZ1 is certified ATEX/IECEx Zone 1/21 and NEC/CEC Class I Division 1, but its own documentation does not extend that certification to Zone 0. A device rated for Division 1 in North America is not automatically rated for Zone 0 under ATEX — these are two different thresholds, and only one of these two phones clears the higher one.

Core Specifications: Bartec SP9EX1 vs. Ecom Smart-Ex 03 DZ1

• Certification: Bartec SP9EX1 — ATEX Zone 0/1, IECEx Ex ia IIC T4 Ga, CSA Class I Div. 1 (Groups A-D). Ecom Smart-Ex 03 DZ1 — ATEX/IECEx Zone 1/21, NEC/CEC Class I Div. 1.
• Camera / platform: Bartec SP9EX1 — 48MP rear / 8MP front camera, 5G, Android 13. Ecom Smart-Ex 03 DZ1 — 13MP rear / 5MP front camera (camera-free variant available), 5G, Android 13.
• IP rating: Bartec SP9EX1 — IP68. Ecom Smart-Ex 03 DZ1 — IP68 + MIL-STD-810H (pending confirmation on published spec sheet).
• Price: Bartec SP9EX1 — $2,700.00 USD. Ecom Smart-Ex 03 DZ1 — $2,000.00 USD.

Which One Is Legal for Your Area

Unlike most comparisons in this catalog, this one starts with a certification filter, not a feature preference:

• If your area is classified Zone 0 — continuous or long-duration explosive atmosphere — the Bartec SP9EX1 is the only one of these two devices certified to meet the ‘ia’ protection level required for Zone 0.
• If your area is Zone 1/21 only, with no Zone 0 exposure, the Ecom Smart-Ex 03 DZ1 meets that classification at $700.00 less than the Bartec.
• Confirm your exact zone classification with your HSE team before comparing camera resolution or price — it’s the only spec here that actually disqualifies one of the two options.
• If your organization has an information-security policy restricting cameras in secure areas, ask about the Ecom Smart-Ex 03 DZ1’s camera-free variant.

Recommended Products for Zone 0/1 Intrinsically Safe Smartphones: Bartec SP9EX1 vs. Ecom Smart-Ex 03 DZ1

The following products from our catalog are certified for use in hazardous areas and directly relevant to this guide:

FAQs

What’s the difference between the Bartec SP9EX1 and Ecom Smart-Ex 03 DZ1?

The SP9EX1 is certified ATEX Zone 0/1, IECEx Ex ia IIC T4 Ga, and CSA Class I Division 1, with a 48MP rear camera, priced at $2,700.00. The Smart-Ex 03 DZ1 is certified ATEX/IECEx Zone 1/21 and NEC/CEC Class I Division 1 — it does not cover Zone 0 — with a 13MP rear camera, priced at $2,000.00.

Can the Ecom Smart-Ex 03 DZ1 be used in a Zone 0 area?

The Ecom Smart-Ex 03 DZ1 is not certified for use in Zone 0 areas. According to its own certification documentation, the Smart-Ex 03 DZ1 is rated for ATEX/IECEx Zone 1/21 and NEC/CEC Class I Division 1, but not Zone 0. If your area requires Zone 0 coverage, the Bartec SP9EX1 — certified “ia” for Zone 0/1 — is the only one of these two phones that qualifies.

What does the “ia” intrinsic safety marking mean?

“Ia” is the highest intrinsic-safety protection level defined under IEC 60079-11, required for equipment used in Zone 0, where explosive atmospheres are present continuously or for long periods. The Bartec SP9EX1 carries this “ia” marking; the Ecom Smart-Ex 03 DZ1’s Zone 1/21 certification does not require or include it.

Is there a camera-free version of either smartphone?

Yes — the Ecom Smart-Ex 03 DZ1 is available in a camera-free variant for facilities with information-security policies that restrict cameras in secure or classified areas. This option is worth asking about when requesting a quote if your site has that requirement.

Why is the Bartec SP9EX1 more expensive than the Ecom Smart-Ex 03 DZ1?

At $2,700.00 versus $2,000.00, the $700.00 premium reflects the SP9EX1’s Zone 0 certification — the “ia” protection level required for continuous explosive-atmosphere exposure — plus its higher-resolution 48MP camera. Buyers whose sites are strictly Zone 1/21 don’t need to pay that premium; the Smart-Ex 03 DZ1 meets their classification at the lower price.

Conclusion

The Bartec SP9EX1 and the Ecom Smart-Ex 03 DZ1 look like close competitors on paper, but they aren’t certified for the same hazardous area. The SP9EX1’s “ia” protection level and Zone 0/1 certification make it the only legal option for continuous explosive-atmosphere zones, while the Smart-Ex 03 DZ1 covers Zone 1/21 at a $700.00 lower price. Confirm your site’s exact classification with your HSE team before ordering — it’s the one spec in this comparison that actually decides the outcome, ahead of camera resolution or cost.