Coastal climate
The setting is general hot, humid coastal conditions with salty air and monsoon rain, which favours sealed, corrosion-resistant devices.
The chemical port terminal can handle liquid cargo at up to 25,000 tonnes a day, and a bulk facility unloads up to 30,000 tonnes a day, so liquid and dust hazards both occur on the waterfront. It hosts Petronet LNG's terminal and petrochemical and liquid-handling operations, so gas, LNG and chemical handling create Zone 1 areas. This page explains what to look for in an Ex-proof mobile phone for Dahej, Gujarat, and where the IS-04Z1 stands against that list today.
Pre-launch · certification in progress · Launching Q4 2026
Short answer. The SAMS IS-04Z1 is the intrinsically safe smartphone covered here for Dahej, Gujarat: pre-launch, designed for Zone 1 and Zone 21 (marking target Ex ib IIC T4), with certification in progress and no certificate issued.
Where things stand: the IS-04Z1 has not launched, and none of its four certification routes has produced a certificate yet. 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 |
|---|---|---|
| Ex marking | Group, category, protection concept, gas group, temperature class | II 2 G Ex ib IIC T4 (target) |
| Gas group | IIA, IIB or IIC matched to the area drawing | IIC (target) |
| Temperature class | T-class below the ignition temperature of the gas | T4, 135 °C (target) |
| Where it applies | Dahej, Gujarat: Ethane and propane handling, Marine jetties, Petrochemical plants | Classified by the site operator |

An intrinsically safe Android smartphone designed for Zone 1 and Zone 21 hazardous areas in Dahej India. It is pre-launch: IECEx, ATEX and NEC 500 certification is in progress ahead of the Q4 2026 launch.
The companies on site and the hazardous-area types a handset is likely to meet there.
The setting is general hot, humid coastal conditions with salty air and monsoon rain, which favours sealed, corrosion-resistant devices.
Petronet LNG reported the Dahej terminal expanded from 17.5 to 22.5 million tonnes a year, with the additional capacity commissioned by 31 March 2026. A third jetty for LNG, ethane and propane is being built.
The nearest airports are at Ahmedabad, Surat and Vadodara, and Bharuch, about 45 kilometres away, is being connected to Dahej by a broad-gauge rail siding.
It is the first terminal in India to load LNG into trucks, with four truck-loading bays, and acts as a hub for small-scale LNG for customers without pipeline access.
The port lies in the Gulf of Cambay at the junction of the Guljaria and Ban creeks and is a natural deep-water port taking vessels with a draft of up to 25 metres.
The hinterland is being developed as a special economic zone of 30,000 hectares, with the four-lane highway being widened to six lanes and the rail line upgraded to broad gauge sidings.
“Ex-proof” is shorthand for equipment carrying an explosion-protection marking (the Ex mark) that matches the area it enters. The marking states the protection concept, gas or dust group and temperature class, and it must be backed by a certificate issued by a recognised body, so a phone described as Ex-proof should come with a certificate number you can check.
The IS-04Z1 is designed to carry the marking II 2 G Ex ib IIC T4. That is a target: certification is in progress, no certificate has been issued, and SAMS will publish the certificate numbers when they exist.
In Dahej, Gujarat. A marking check at Dahej would compare the device against natural gas, ethane and propane areas and chemical tank areas. Light hydrocarbons often point to lower gas groups, while some chemicals need other groups. The plant's classification sets the requirement. The IS-04Z1 target marking is II 2 G Ex ib IIC T4.
A short checklist for anyone writing or reviewing the specification, with the IS-04Z1 status against each point.
No. Nothing can be bought or taken into a classified area today: certification is in progress and launch is planned for Q4 2026. What is available now is the datasheet, the written certification schedule and evaluation units for safe-area use.
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 marking target is II 2 G Ex ib IIC T4. It becomes a marking only when the certificate is issued; until then it is a design target.
Likely candidates are lng storage and regasification, ethane and propane handling, marine jetties, petrochemical plants. Which areas are classified, and to what zone, is set by the site operator's own area classification drawings.
Not exactly. Explosion proof is a broad everyday term; intrinsic safety is one protection concept, which limits energy so ignition cannot occur. Flameproof (Ex d) is a different concept that contains an explosion. The IS-04Z1 is intrinsically safe by design.
The nearest airports are Ahmedabad, Surat and Vadodara, with Bharuch about 45 kilometres from the port. Road transfer is the norm, and sites usually require advance gate passes and induction.
April and May are very hot, and the monsoon brings about 800 millimetres of rain between June and September. Choose water-resistant devices with a wide operating temperature range and check the datasheet.
New jetties, storage and process areas will carry their own classification once designed, and these may differ from existing ones. Treat each area on its own record. Confirm the zone, gas group and temperature class with the terminal operator for any new or modified area.
Related guides for Dahej India and for India.
Send the site, zone and gas group and roughly how many handsets. We reply by email with the datasheet and the certification schedule.
Name the site and the operator and we will send what is available before launch.