ATX - 13.56 MHz DESFIRE® ATEX & IECEx certified readers

ATX - 13.56 MHz DESFIRE® ATEX & IECEx certified readers

The ATX 13.56 MHz is a high security ATEX & IECEx certified proximity reader for all your access control requirements in explosive environments. STid’s range of ATX RFID products can be used to meet all your contactless identification needs in the chemical and petrochemical industries, in refineries or in nuclear power plants. The ATX reader boasts the latest security technology from STid, ensuring secure, confidential communications with full data integrity between the credential, reader and management system.

  • STID 144 bis
  • STID 142
  • STID 144
  • STID 143

ATEX & IECEx certifications


logo atex iec iecex


STid has developed a certified RFID reader range to meet the two key industry requirements - security and reliability.

Our solutions are compliant with all the international standards of the market: ATEX (EN60079) & IECEx certifications; European Directives (99/92/EC and 94/9/EC). They are well suited for all your people identification applications in explosive and isolated environments.

The EX II 2 GD IP66 explosion-proof casing is well-suited to the chemical, petrochemical and nuclear industries, among others.

Marking T5

EC type examination certificate: BKI 08 ATEX 0048
Approved type: GUB Ex II 2 GD
(G: gas / D: Dust)
II 2 G Ex d IIC T5 Gb
II 2D Ex tb IIIC T100°C Db IP66

Marking T6

EC type examination certificate: BKI 08 ATEX 0048
Approved type: GUB Ex II 2 GD
(G: gas / D: Dust)
II 2 G Ex db IIC T6
II 2D Ex tb IIIC T85°C IP66

Access control applications in ATEX areas

Our solutions are well designed for all your identification applications requiring explosion-proof equipments:

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Petrolier US secu Centrales nucleaire US secu Mines us

Welcome to high security

Anssi flat

STid is the first RFID manufacturer to have received First Level Security Certification (CSPN). It’s a recognition of our unique know-how, the technological and security expertise that are implemented in your access architecture, whether new or existing.

The ATX readers use the latest MIFARE® contactless chip technologies with new data security mechanisms. All public encryption algorithms can be used (3DES, AES, RSA, SHA, etc.), which are recommended by official data security agencies (such as the RGS of the French national agency ANSSI).


logos nxp mifare nfc 2017

Logo secard 


The SECard software lets users, installers and integrators easily:

Outils Secard

  • securely program user RFID and virtual cards,
  • create master physical or virtual badges for programming readers,
  • manage keys and security configurations.


See flyer


  • 100% local sandboxed programming
  • Autonomous management for securely programming RFID and Bluetooth® user cards
  • Configuration and reconfiguration of readers
  • Protection and confidentiality of user cards and the master card
  • Plug & Play tool
  • Fully compatible with AGENT, CIMS and STITCH cards
  • Complies with General Data Protection Regulation no. 2016/679 and Standard EN16571


The readers are fully compatible with the Open Supervised Device Protocol - OSDP™ V1 (plain communication) and V2 (Secure Channel Protocol - SCP secure communication)


logo sscp

The readers are compliant with the latest generation of SSCP open protocols (STid Secure Common Protocol). Recommended by the French national agency ANSSI, it uses data encryption (AES) and two-way “reader-controller” authentication to ensure security before any communication is allowed between the reader and the management system.

Data sheet

  • Frequency
    Frequency: 13.56 MHz
  • Standards
    Standards: ISO14443 types A & B, ISO18092 / Certifications: CE & FCC
  • Chip
    Chip: MIFARE® Ultralight® & Ultralight® C, MIFARE® Classic & Classic EV1, MIFARE Plus® (S/X) & Plus® EV1, MIFARE® DESFire® 256, EV1 & EV2, SMART MX, NFC (HCE), PicoPass® (CSN only), iCLASS™ (CSN only*)
  • Functions
    Functions: Read only: CSN or private ID (sector / file) / Secure Protocol (Secure Plus) / Pre-configured (PC1) - Read write (SSCP and SSCP2) - Read write CSN or private ID via OSDP™
  • Interfaces
    Interfaces: TTL - Data Clock (ISO2), Wiegand (optional ciphered - S31), RS232 (optional ciphered - S32) or RS485 (optional ciphered - S33)
  • Reading distances
    Reading distances: 0 - 4 cm / 0 - 1.57’’
  • Power supply
    Power supply: 7 - 28 VDC / Typical consumption 150 mA / 12 VDC
  • Material
    Material: Aluminum alloy & stainless steel, epoxy grey RAL 9006
  • Color
    Color: Grey
  • Dimensions (h x w x d)
    Dimensions (h x w x d): 310 x 270 x 175 mm / 12.2’’ x 10.63’’ x 6.89’’
  • Operating temperatures
    Operating temperatures: -20°C to +70°C / -4°F to +158°F (marking T5) / -20°C to +50°C / -4°F to +122°F (marking T6)
  • Protection
    Protection: Reinforced vandal proof structure
  • Resistance
    Resistance: IP66 level - Weather, water and dust resistant (CEI NF EN 61086 certification) / Humidity: 0 - 95%

*Our readers read only the iCLASS™ UID / Chip Serial Number. They do not read secure HID Global’s iCLASS™ cryptographic protections.

ATX new visuel

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Part numbers


  Picto R Read only


Serial number TTL:

ATX-R31-E/103-xx/3 (marking T5) / ATX2-R31-E/103-xx/3 (marking T6) 

Pre-configured - TTL:

ATX-R31-E/PC1-xx/3 (marking T5) / ATX2-R31-E/PC1-xx/3 (marking T6)

Secure - TTL:

ATX-R31-E/PH5-xx/3 (marking T5) / ATX2-R31-E/PH5-xx/3 (marking T6)

Secure / Secure Plus - TTL:

ATX-S31-E/PH5-xx/3 (marking T5) / ATX2-S31-E/PH5-xx/3 (marking T6) 

Secure - RS232:

ATX-R32-E/PH5-5AB/3 (marking T5) / ATX2-R32-E/PH5-5AB/3 (marking T6)

Secure / Secure Plus - RS232:

ATX-S32-E/PH5-5AB/3 (marking T5) / ATX2-S32-E/PH5-5AB/3 (marking T6) 

Secure - RS485:

ATX-R33-E/PH5-7AB/3 (marking T5) / ATX2-R33-E/PH5-7AB/3 (marking T6)

Secure / EasySecure decoder - RS485:

ATX-R33-E/PH5-7AA/3 (marking T5) / ATX2-R33-E/PH5-7AA/3 (marking T6)

Secure / Secure Plus - RS485:

ATX-S33-E/PH5-7AB/3 (marking T5) / ATX2-S33-E/PH5-7AB/3 (marking T6) 

Secure / Secure Plus / EasySecure decoder - RS485:

ATX-S33-E/PH5-7AA/3 (marking T5) / ATX2-S33-E/PH5-7AA/3 (marking T6) 

Secure / EasySecure decoder - Transparent - RS485:

ATX-R33-E/PH5-7BB/3 (marking T5) / ATX2-R33-E/PH5-7BB/3 (marking T6) 


picto RW Read write


Secure - RS232:

ATX-W32-E/PH5-5AA/3 (marking T5) / ATX2-W32-E/PH5-5AA/3 (marking T6)

Secure - RS485:

ATX-W33-E/PH5-7AA/3 (marking T5) / ATX2-W33-E/PH5-7AA/3 (marking T6)

Secure - RS485 - RemoteSecure decoder:

ATX-W33-E/PH5-7BB/3 (marking T5) / ATX2-W33-E/PH5-7BB/3 (marking T6) 

Secure - RS485 - RemoteSecure decoder for 4 readers:

ATX-W33-E/PH5-7BC/3 (marking T5) / ATX2-W33-E/PH5-7BC/3 (marking T6) 

Secure SSCP2 - RS485:

ATX-W33-E/PH5-7AD/3 (marking T5) / ATX2-W33-E/PH5-7AD/3 (marking T6) 

Serial number OSDP - RS485:

ATX-W33-E/103-7OS/3 (marking T5) / ATX2-W33-E/103-7OS/3 (marking T6) 

Secure OSDP - RS485:

ATX-W33-E/PH5-7OS/3 (marking T5) / ATX2-W33-E/PH5-7OS/3 (marking T6) 

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