Hot, wet climate
The climate is tropical monsoon with temperatures often above 40 C and a record flood in 2007, so low-lying sites need weather planning.
Main city roads include Paseo Tabasco, Gregorio Mendez Avenue, the Periferico, Ruiz Cortines Avenue and Pino Suarez Avenue, which matter for moving equipment between sites. Fields such as Ogarrio lie nearby and the Olmeca refinery at Dos Bocas is in the state, so many hazardous-area workers are based here. 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.
For the record, no certificate exists for the IS-04Z1 today. The programme is under way ahead of a Q4 2026 launch. A buyer's engineering review is separate from the certificate. Certification status. Place facts reviewed October 2026.
| Check | What to look for | IS-04Z1 today |
|---|---|---|
| Protection concept | Flameproof (Ex d) or intrinsic safety (Ex i) | Intrinsic safety, level ib |
| Zone suitability | Zone 1 gas and Zone 21 dust | Design target for Zone 1 and 21 |
| Certificate | Number, issuing body and schedule of conditions | In progress; not issued |
| 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 climate is tropical monsoon with temperatures often above 40 C and a record flood in 2007, so low-lying sites need weather planning.
Offices, warehouses and service firms concentrate in the city, with fields and plants spread across the surrounding lowlands.
Tabasco is largely low-lying floodplain, wetland and tropical rainforest, with about 199 km of coastline and roughly 29,800 hectares of estuaries and lakes, so wet ground is common around the city.
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.
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.
“Explosion proof” is the phrase most buyers use for equipment that may be taken into a classified hazardous area. Strictly, it covers several protection concepts: a flameproof enclosure (Ex d) contains an internal explosion, while intrinsic safety (Ex i) limits electrical energy so that an ignition cannot start. Phones are normally intrinsically safe, because a flameproof handset would be too heavy to carry all shift.
The IS-04Z1 uses intrinsic safety, with a marking target of Ex ib IIC T4, and is designed for Zone 1 and Zone 21. It is pre-launch, certification is in progress and no certificate has been issued.
In Villahermosa. Tabasco workers say explosion-proof for any gear used at wells, refineries or pipeline sites. Flameproof Ex d is one concept, usually for fixed enclosures. A portable phone for field inspection and plant rounds is better served by intrinsic safety, the principle on which the IS-04Z1 is designed.
Distribution of the IS-04Z1 is by authorised partners only, and SAMS has not yet granted a territory for Villahermosa. Each application is reviewed on its merits. Because opening a certified Ex handset in an ordinary workshop invalidates its certificate, the partner must be able to support and service the device locally.
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.
There is no list price yet. SAMS gives indicative pre-launch pricing in writing, against a stated quantity and site, and does not commit to a lead time before certification completes.
It is intrinsically safe (marking target Ex ib IIC T4), which is the usual way to make a phone for hazardous areas. It is not a flameproof (Ex d) design, and certification is still 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.
Other guides for Villahermosa, other places in Mexico, and the pages behind them.
Share the site details and quantity. You will get the datasheet and the certification schedule back by email; pricing is indicative only until launch.
Send the zone and gas group of your site and we will reply with the datasheet and schedule.