Refinery nearby
The Olmeca refinery at Dos Bocas, Paraiso, marked two years of operation in August 2026, with capital spending budgeted for 2026.
Villahermosa is the capital of Tabasco and is known as the energy city of Mexico because of its role in southern oil and gas. Villahermosa has several lagoons, the largest being La Laguna de las Ilusiones, so water and wetlands influence site layout and access across the surrounding lowlands. Distribution partners for Villahermosa are being identified ahead of the Q4 2026 launch of the IS-04Z1.
Pre-launch · certification in progress · Launching Q4 2026
Short answer. Villahermosa has no appointed SAMS distributor yet: the IS-04Z1 is pre-launch (certification in progress, no certificate issued, launch planned for Q4 2026), and distributor applications are open.
Current position: certification in progress, nothing issued, launch targeted for Q4 2026. An operator's own vendor approval is a separate step. Certification status. Place facts reviewed October 2026.
| Check | What to look for | IS-04Z1 today |
|---|---|---|
| Level of protection | ia, ib or ic matched to the zone | ib, for Zone 1 |
| Entity parameters | Uo, Io and Po within the device limits | Published with the certificate |
| Accessories | Chargers and cases certified with the device | Defined at certification |
| Where it applies | Villahermosa: Oil and gas production facilities, Refinery process units (Olmeca, Dos Bocas), Pipeline and storage facilities | Classified by the site operator |

An intrinsically safe Android smartphone designed for Zone 1 and Zone 21 hazardous areas in Villahermosa. It is pre-launch: IECEx, ATEX and NEC 500 certification is in progress ahead of the Q4 2026 launch.
A short profile of the site and the kinds of classified area that matter for portable equipment.
The Olmeca refinery at Dos Bocas, Paraiso, marked two years of operation in August 2026, with capital spending budgeted for 2026.
The climate is tropical monsoon with temperatures often above 40 C and a record flood in 2007, so low-lying sites need weather planning.
The city is about 50 km south of the Gulf coast and 904 km southeast of Mexico City, between the Grijalva and Carrizal rivers, at an average elevation of about 10 m above sea level.
Villahermosa's airport was inaugurated on 2 May 1979, has a single 2,200 m runway and has offered flights to Houston and Panama City aimed largely at the oil industry.
Villahermosa, capital of Tabasco, has become a hub for oil and gas operations in southern Mexico, alongside its agricultural base of cacao, sugarcane, bananas and rice.
The climate is tropical monsoon, with spring and summer temperatures reaching above 40 C, and a short humid winter with daytime highs around 28 C, which stresses batteries and enclosures.
Intrinsic safety limits the electrical and thermal energy in a circuit so that neither a spark nor a hot surface can ignite a gas or dust atmosphere, even when a fault occurs. The ib level, used for Zone 1, tolerates one fault. It is the usual way to make a handheld device that a worker carries continuously through a hazardous area.
The IS-04Z1 is designed on this principle for Zone 1 and Zone 21 (marking target II 2 G Ex ib IIC T4). Intrinsic safety is a design basis, not a certificate: certification is in progress and none has been issued yet.
In Villahermosa. Many hazardous-area workers are based in Villahermosa and travel out to fields, refinery units and storage across the lowlands. An intrinsically safe handheld lets them carry one device for reports, photos and permits through classified areas. That mobility is the purpose behind the IS-04Z1 design, subject to certification.
A distributor for Villahermosa would carry the IS-04Z1 after certification completes; the Q4 2026 launch is the planning date and no appointment has been made. SAMS reviews applicants one by one and prefers companies with their own Ex-competent technical and service staff, since certified devices must not be repaired outside approved channels.
Not yet. The IS-04Z1 is pre-launch and its certification is still in progress ahead of a Q4 2026 launch. No unit goes into a classified area before the certificate covering it exists. The datasheet, the certification schedule and safe-area evaluation units are available now.
SAMS has not published a price. Any figure you are offered for an uncertified Ex phone should be treated with caution; written indicative pricing is available for a defined quantity and site.
The circuits are designed to limit energy so a spark or hot surface cannot ignite a gas or dust atmosphere, even with one fault (level ib, Zone 1). Certification of that design is in progress.
Likely candidates are oil and gas production facilities, refinery process units (olmeca, dos bocas), pipeline and storage facilities. Which areas are classified, and to what zone, is set by the site operator's own area classification drawings.
Apply through the distributor page with your company details and the territory you cover. SAMS reviews applications company by company and has not yet granted a territory for Villahermosa.
Operators commonly accept recognised Ex certificates such as IECEx or ATEX alongside Mexican conformity requirements. This changes, so confirm with the operator and a local adviser before shipping.
Typically yes, because tropical monsoon conditions bring heavy humidity and rain, so sealed housings, dry storage and cleaning routines help. Confirm the site's ingress protection requirement.
Equipment usually goes through Pemex supplier procedures or its contractors, each with its own registration and technical approval. A supplier cannot self-approve a device. Ask the relevant Pemex unit or contractor which documents it needs, and confirm with the site operator.
More on Villahermosa, and on other places in Mexico.
Send the site, zone and gas group and roughly how many handsets. We reply by email with the datasheet and the certification schedule.
Tell us the zone, gas group and operator. We will send the datasheet and the certification schedule.