Durabook · Rugged tablet, Ex version
Durabook U11I-EX
- Zone 2/22
- ATEX
- IIC
- T4
The Durabook U11I-EX is the hazardous-area version of a Durabook rugged 11.6-inch tablet, certified for Zone 2/22 under ATEX. It is an intrinsically safe (Ex ic) design running Windows 11 Pro.
- Certified for
- Zone 2/22
- Protection
- Intrinsic safety (Ex ic)
- Screen
- 11.6-inch
- Temperature class
- T4 (≤ 135 °C)
- Operating system
- Windows 11 Pro
- Security updates
- Supported while kept on a current Windows 11 version
- Weight
- 1490 gUnconfirmed, see note 1
- Price
- On request
Overview
Strengths and limitations
Strengths
- Optional built-in barcode imager
- 5G on cellular versions
- User-replaceable battery
Limitations
- Zone 2 only, so not for Zone 1 areas
- T4 temperature class: fine for most gases, but not those that ignite below 135 °C
- Dust group IIIB: combustible flyings and non-conductive dust only, not conductive dust
- ATEX only: no IECEx certificate
Best for
Certification
Where you can use it
Gas
- Zone 0not certified.Explosive gas present continuously or for long periods
- Zone 1not certified.Explosive gas likely in normal operation
- Zone 2certified.Explosive gas unlikely, and only briefly
Dust
- Zone 20not certified.Combustible dust present continuously or for long periods
- Zone 21not certified.Combustible dust likely in normal operation
- Zone 22certified.Combustible dust unlikely, and only briefly
The Ex marking, decoded
Gas atmospheresZone 2
II3GExicIICT4Gc
IIEquipment group- Group II: equipment for surface industries (not mining).
3GATEX category- Category 3 for gas: suitable down to Zone 2.
ExExplosion protected- Certified to the IEC 60079 / EN 60079 series.
icProtection type- Intrinsic safety, level "ic": safe in normal operation. Zone 2 only.
IICGas group- Gas group IIC, e.g. hydrogen and acetylene. The most demanding group; also covers IIA and IIB.
T4Temperature class- Surface stays below 135 °C. T6 is the strictest class.
GcProtection level- Equipment protection level Gc (enhanced): suitable for Zone 2.
Dust atmospheresZone 22
II3DExicIIIBT135°CDc
3DATEX category- Category 3 for dust: suitable down to Zone 22.
IIIBDust group- Dust group IIIB: non-conductive dust. Also covers IIIA.
T135°CMax surface temperature- Surface stays below 135°C in dust.
DcProtection level- Equipment protection level Dc (enhanced): suitable for Zone 22.
IIExic as above.
Safe use
Rules for the hazardous area
- Charging
- Outside the hazardous area only
- Battery swap
- Outside the hazardous area only
- Ports and accessories in the zone
- Per the manual: the tablet shall not be connected to any external device. All I/O ports are covered by explosion-proof brackets that must be fitted (with screws) before entering the ATEX area. The anti-static leather case is mandatory.
- Certified accessories
- Supplied with the Ex tablet and part of the certification: ATEX anti-static leather case, bottom bracket and screws, stylus and tether. AC adapter and power cord for the safe area only. The datasheet lists 2-bay and 8-bay chargers, hand strap, shoulder straps, tablet stand and other accessories without Ex status; none is named as Ex-certified.Unconfirmed, see note 2
- Operating temperature
- −20 °C to +60 °C
Conditions of use
Must be used with the ATEX case supplied by Twinhead, packed as the manual describes. Must not be connected to any external device. Battery may only be charged in a safe area with the supplied adapter (FSP065-RBBN3, 19 V, 3.42 A, 65 W). Do not replace or charge the battery in explosive environments. Do not use the device without the ATEX case in explosive environments. Use only Japone Technology X11BA-H (9600 mAh) or X11BA-M (4800 mAh) batteries.
Specifications
Full specifications
Certification
- ATEX marking
- II 3G Ex ic IIC T4 Gc / II 3D Ex ic IIIB T135°C Dc
- ATEX certificate
- TPS 23 ATEX 123637 0001 X (certificate of conformity, category 3)Unconfirmed, see note 3
- Other approvals
- MIL-STD-810H; IP66
- Protection level (EPL)
- Gc / Dc
- Dust group
- IIIB
- Max surface temperature (dust)
- 135 °C
Device
- Type
- Rugged tablet, Ex version
- Launched
- 2024
- Operating system
- Windows 11 Pro
- Edition
- Windows 11 Pro 64-bitUnconfirmed, see note 4
- Security updates
- Supported while kept on a current Windows 11 version
- Processor
- Intel Core i7-1250U vPro / i5-1230U vPro (12th gen)
- Processor architecture
- x86
- Memory (RAM)
- 8 (up to 32), LPDDR4x onboard
- Storage
- 256 GB NVMe (options 512 GB, 1000 GB, 2000 GB), microSD
Field capabilities
- Barcode scanning
- Built in (optional 1D/2D barcode reader)
- Remote expert / video calls
- Via app
- Windows desktop software
- Built in (Windows 11 Pro, x86)
Display and camera
- Display
- 11.6-inch
- Resolution
- 1920 × 1080
- Brightness
- 1000 (optional sunlight-readable DynaVue)
- Touch
- User-selectable finger/water, glove, stylus
- Pen / stylus
- Optional digitizer
- Rear camera
- Optional 11 MP autofocus with flash
- Front camera
- 2 MP; optional 5 MP IR for Windows Hello
Connectivity
- Network
- Wi-Fi 6E; optional 4G LTE, 5G (project based)
- Wi-Fi
- Intel Wi-Fi 6E AX211
- Bluetooth
- Bluetooth 5.3
- Satellite positioning
- Optional u-blox NEO-M9N
- SIM
- Nano-SIM
Physical and power
- Weight
- 1490 gUnconfirmed, see note 1
- Dimensions
- 317 × 215 × 23.8 (tablet) mm
- Ingress protection
- IP66
- Ruggedness
- MIL-STD-810H; 6 ft (1.8 m), 26 faces
- Battery
- 4800 typical (7.6 V); optional hi-cap 9600
- Battery energy
- 36.5Unconfirmed, see note 5
- Battery life
- 10 h standard, 20 h hi-cap (MobileMark 2014)
- Hot-swap battery
- Optional bridge battery, 5 minute swap
- Replaceable battery
- Yes
- Ports and expansion
- Thunderbolt 4, USB-A, audio, microSD, RJ45, 20-pin pogo dock, nano-SIM, DC-in; optional smart card, USB-C, second USB-A, USB 2.0, RS232/422/485, barcode
- Docking
- 20-pin pogo (docks not for Ex area)
Controls & Accessibility
- Keys
- 5 buttons (2 user-defined)
- Push-to-talk key
- No
- Glove touch
- Yes
- Biometrics
- Optional fingerprint, Windows Hello
Fleet and support
- Manufacturer
- Twinhead International Corp. (Durabook), Taiwan
Only specifications we could check are listed. A numbered marker next to a value means it is unconfirmed: it comes from a single or secondary source, or sources disagree. The matching note at the foot of the page explains each one. See the Twinhead International Corp. (Durabook) website for the full data sheet.
Compare
How it compares
Best in this comparison
| DurabookDurabook U11I-EXThis tablet | ||||
|---|---|---|---|---|
| Type | Rugged tablet, Ex version | Rugged tablet, Ex version | Rugged tablet, Ex version | Rugged tablet, Ex version |
| Screen size | 11.6-inch | 11.6-inch | 10.1-inch | 10.1-inch |
| Availability | Current | Current | Current | Current |
| Gas zones | Zone 2 | Zone 2 | Zone 2 | Zone 2 |
| Dust zones | Zone 22 | Zone 22 | Zone 22 | — |
| Protection | Intrinsic safety (Ex ic) | Intrinsic safety (Ex ic) with inherently safe optical radiation (op is) | Intrinsic safety (Ex ic) with inherently safe optical radiation (op is) | Intrinsic safety (Ex ic) |
| Gas group | IIC | IIC | IIC | IIC |
| Temperature class | T4 | T4 | T4 | T4 |
| Certification | ATEX | ATEX + IECEx | ATEX + IECEx | ATEX + IECEx |
| North America | — | — | — | Class I Division 2 |
| Ambient temperature | — | −21 °C to +60 °C | −20 °C to +55 °C | −10 °C to +50 °C |
| Charging in the Ex area | Not allowed | Not allowed | Not allowed | Not allowed |
| Operating system | Windows 11 Pro | Windows 11 Pro | Windows 11 Professional | Windows 11 IoT Enterprise LTSC |
| Security updates | Supported while kept on a current Windows 11 version | Supported while kept on a current Windows 11 version | Supported while kept on a current Windows 11 version | Until October 2034 |
| Weight | 1490 g | 1680 g | 1200 g (best in this comparison) | 1200 g (best in this comparison) |
| Display | 11.6-inch | 11.6-inch TFT LCD, wide viewing angle, LumiBond optically bonded | 10.1-inch Optically bonded capacitive multi-touch, Corning Gorilla Glass, contrast 1000:1 | 10.1-inch IPS LED, optical bonding, anti-glare |
| 5G | Yes | Yes | Yes | Yes |
| Pen / stylus | Optional digitizer | Yes, digitizer pen with tether (dual-mode touch) | Passive stylus included (AI-powered touch control) | Capacitive stylus (included) |
| Replaceable battery | Yes | Yes | Yes | Yes |
| Hot-swap battery | Optional bridge battery, 5 minute swap | Yes, "LifeSupport battery swappable technology" (non-hazardous areas only) | Yes (true hot swap, minimum 60 seconds) | Yes, hot-swappable battery (swap outside hazardous areas per the Ex certificate) |
| Price | On request | On request | On request | On request |
FAQ
Common questions
Is the Durabook U11I-EX certified for Zone 1?
No. It is certified for Zone 2/22 only, so it can be used in Zone 2 but not in Zone 1.
Can the Durabook U11I-EX be used in Zone 0?
No. It is not certified for Zone 0. Zone 0 needs equipment with protection level Ga, such as Ex ia intrinsic safety.
What type of explosion protection does the Durabook U11I-EX use?
It is intrinsically safe: intrinsic safety (Ex ic). Intrinsic safety limits the electrical and thermal energy in the device below the level that could ignite the surrounding atmosphere.
What does T4 mean for the Durabook U11I-EX?
Its surface stays below 135 °C, so it is suitable for gases that only ignite above that temperature. Check the ignition temperature of the substances on your site.
Can you charge the Durabook U11I-EX in a hazardous area?
No. The certificate only allows charging outside the hazardous area.
Which ports and accessories can be used with the Durabook U11I-EX in the hazardous area?
Per the manual: the tablet shall not be connected to any external device. All I/O ports are covered by explosion-proof brackets that must be fitted (with screws) before entering the ATEX area. The anti-static leather case is mandatory.
What operating system does the Durabook U11I-EX run?
Windows 11 Pro. Windows 11 has no fixed end date: Microsoft supports each version for about two years, so it keeps getting security updates while it's kept on a current version.
How much does the Durabook U11I-EX cost?
Prices for certified hazardous-area tablets depend on volume, configuration and region, so they are on request. Contact us for a price.
Notes on unconfirmed values
- From a single source; the maker's figures vary. Return to note 1
- Not checked against the certificate for this exact model. Return to note 2
- From Durabook's user manual, which reproduces the certificate of conformity; the certificate itself isn't published. Return to note 3
- The maker doesn't state the edition year. Return to note 4
- Calculated from the maker's battery capacity and voltage; the maker doesn't state watt-hours. Return to note 5
Sources and verification
Facts last verified on against:
- Microsoft: Lifecycle: Windows 11 Home and Pro (25H2 end listed 10/13/2027; 24H2 10/14/2026)
- Durabook: U11-EX (US) datasheet, Sep. 2025 V4
- Durabook (Twinhead): U11I-EX user manual V2.0 (file U11I-EX_User Manual_20260706), incl. ATEX certificate number and special conditions; ATEX file R1 dated 2024-02-20
- Durabook via PR Newswire UK: Press release 2024-02-27: ATEX-certified R8-EX and U11I-EX (URL from research file 02, not re-fetched in this pass)
Always check the certificate for your exact model before use. Spotted an error? Tell us.