Tropical climate
Hot and humid all year with about 2,350 mm of annual rain, concentrated in the monsoon periods.
Johor Bahru · Ex-proof
Ex-Proof Mobile Phone in Johor Bahru
Rail from the city to Woodlands in Singapore was built in the 1880s and 1890s, the Peninsula railway extension finished in 1909, and the Causeway opened in 1923, so cross-border links are long established. Heavy industry sits at Pasir Gudang, home to Johor Port with a liquid terminal, and further east at the Pengerang complex, so Zone 1 work is outside the city centre. If you are specifying an Ex-proof mobile phone for Johor Bahru and Pasir Gudang, this page covers the markings, the approvals and the current certification status of the IS-04Z1.
Pre-launch · certification in progress · Launching Q4 2026
Marking targetEx ib IIC T4Intrinsic safety, Zone 1 / 21 design target · certification in progress
AvailabilityQ4 2026via authorised distributors
Search topicEx-proof
DeviceMobile Phone
RouteSpecification
WhereJohor Bahru
Short answer. The SAMS IS-04Z1 is the intrinsically safe smartphone covered here for Johor Bahru and Pasir Gudang: 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.
At a glance · Ex-proof
Checklist: Ex-proof mobile phone for Johor Bahru and Pasir Gudang
| 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 | Johor Bahru and Pasir Gudang: Port liquid bulk terminals, Petrochemical and oleochemical plants, Refinery and petrochemical process units (Pengerang) | Classified by the site operator |
Product · Johor Bahru
The product behind this search: the SAMS IS-04Z1.
SAMS IS-04Z1
An intrinsically safe Android smartphone designed for Zone 1 and Zone 21 hazardous areas in Johor Bahru. It is pre-launch: IECEx, ATEX and NEC 500 certification is in progress ahead of the Q4 2026 launch.
- IP68 sealed
- 4,000 mAh battery
- 50 MP camera
- Android 16
- Zone 1 / Zone 21 design target
The site · Johor Bahru and Pasir Gudang
Johor Bahru and Pasir Gudang at a glance: who is there, what is classified
A short profile of the site and the kinds of classified area that matter for portable equipment.
Operators and companies on site
- Johor Port (Pasir Gudang)
- PETRONAS (Pengerang Integrated Complex)
Classified areas to expect
- Port liquid bulk terminals
- Petrochemical and oleochemical plants
- Refinery and petrochemical process units (Pengerang)
- Fuel and chemical storage
Local conditions · Johor Bahru and Pasir Gudang
Site conditions at Johor Bahru and Pasir Gudang: what wears and what limits equipment
Industrial belt
The Pasir Gudang estate covers about 8,000 acres and houses petrochemical, engineering and other industries, away from the city core.
Field notes · Johor Bahru and Pasir Gudang
More about Johor Bahru and Pasir Gudang that matters for portable equipment
Johor Bahru and Pasir Gudang: rules and approvals
The city forms Zone A of Iskandar Malaysia, the country's largest special economic zone by investment value, and is part of the Johor-Singapore Special Economic Zone and the Indonesia-Malaysia-Singapore Growth Triangle.
Johor Bahru and Pasir Gudang: climate and equipment wear
Johor Bahru has an equatorial climate with steady temperatures, daily averages between about 26 and 28 degrees Celsius, high humidity all year, around 2,350 mm of rain a year and no cyclones.
Johor Bahru and Pasir Gudang: industry on the ground
Local industries include plastic manufacturing, electrical and electronics and food processing, so the city is a base for factory and warehouse work, while the heavy petrochemical sites lie further out in Johor.
Johor Bahru and Pasir Gudang: industry on the ground
The Pengerang Integrated Petroleum Complex, in the Pengerang municipality of Johor, is described as the largest petrochemical complex in Malaysia and a major petrochemical hub internationally.
The term · Ex-proof
What “Ex-proof” means for a smartphone
“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 Johor Bahru and Pasir Gudang. At a port liquid bulk terminal, an oleochemical plant or a Pengerang process unit, a marking check reads zone, gas group and temperature class on the label and compares them with the plant's own classification. Petrochemical sites can involve hydrogen or ethylene, so a IIC target such as II 2 G Ex ib IIC T4 would be checked.
The route · specification
Specifying an Ex-proof mobile phone for Johor Bahru
A short checklist for anyone writing or reviewing the specification, with the IS-04Z1 status against each point.
Check on the paper
- Marking
- Equipment group, category, protection concept, gas group and temperature class, matched to the area drawing.
- Certificate and schedule
- A certificate number, issuing body and the schedule of conditions, not a brochure claim.
- Standards edition
- The IEC 60079 or national standard edition the certificate was issued against.
Check for the IS-04Z1
- Marking target
- II 2 G Ex ib IIC T4: a target, not yet a certificate.
- Certificate status
- IECEx, ATEX, UKEX and NEC 500 in progress; none issued.
- Operator approval
- Separate from the certificate and handled with the site operator.
Questions · Johor Bahru
Frequently asked questions
Can we buy an Ex-proof mobile phone in Johor Bahru today?
Not today. Until the certificates are issued the IS-04Z1 stays out of classified areas, and until launch there is nothing to purchase. You can ask for the datasheet and the certification schedule, or book a safe-area evaluation unit.
What does an Ex-proof mobile phone in Johor Bahru cost?
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.
What Ex marking will the IS-04Z1 carry?
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.
Which areas at Johor Bahru and Pasir Gudang would use it?
Likely candidates are port liquid bulk terminals, petrochemical and oleochemical plants, refinery and petrochemical process units (pengerang), fuel and chemical storage. Which areas are classified, and to what zone, is set by the site operator's own area classification drawings.
Is intrinsically safe the same as explosion proof?
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.
Where are the hazardous-area industrial sites around Johor Bahru?
The best known is the Pengerang Integrated Petroleum Complex, a large petrochemical hub in southeast Johor, and there are other industrial estates across the district. Each operator classifies its own plant, so ask for zone drawings and device rules before bringing handheld equipment.
Who governs the Pengerang area for permits and site access?
Pengerang has been a municipal council since January 2020, after becoming a local authority in 2017, within Kota Tinggi District of Johor. Plant access is controlled by each operator, so check both the municipal and plant-level induction requirements.
Does heavy monsoon rain matter for an Ex handheld in Johor?
Rain is concentrated in the monsoon periods and humidity stays high all year. IP68 is designed to cope with water and dust, but it does not provide explosion protection. Check the certified ambient range and keep the device dry in charging areas. Ask the plant about its portable device rules.
Related guides
Keep exploring
Other guides for Johor Bahru, other places in Malaysia, and the pages behind them.
ATEX and IECEx Mobile Phone in Johor BahruSame place, different guide
Hazardous Area Mobile Phone in Johor BahruSame place, different guide
Explosion-Proof Mobile Phone in Johor BahruSame place, different guide
Rugged Mobile Phone in Johor BahruSame place, different guide
Intrinsically Safe Mobile Phone in Johor BahruSame place, different guide
Industrial Mobile Phone Distributor in Johor BahruSame place, different guide
Malaysia market guideCertification route and regulators
All guides for MalaysiaEvery route we cover
Certification statusWhat is in progress
Enquiry · Johor Bahru and Pasir Gudang
Ask about the IS-04Z1 for Johor Bahru and Pasir Gudang, Malaysia
Send the site, zone and gas group and roughly how many handsets. We reply by email with the datasheet and the certification schedule.
Enquiry · Johor Bahru and Pasir Gudang
Launching Q4 2026
Planning for Johor Bahru?
Send the zone and gas group of your site and we will reply with the datasheet and schedule.