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The products of the P-Ex series have been developed for use in ATEX zones 1 and 2. Our portfolio consists of the intrinsically safe optical isolators of the P-Ex OTR opis series as well as the P-Ex WLAN, a WLAN access point certified for use in ATEX Zone 1 and 2. We also offer a wide range of industrial switches for use in ATEX Zone 2. These are from our manufacturer Red Lion.

P-Ex OTR opis

P-Ex OTR opis transceiver

The transceivers of the P-Ex MC series are characterized by their optically intrinsically safe (op is) fiber optic outputs (LWL) and the flexible input. On the input side, there is either an RJ45 or an LC connection for multi or singlemode fiber optics. The possibility of a redundant power supply is given, as is the choice between 100Mbit or 1Gbit data transfer rate. By connecting a "P-Ex OTR opis" to any switch or media converter, an optically intrinsically safe extension of the network into the Ex area can be made with simple and inexpensive means

  • Installation in ATEX Zone 2 with additional housing possible

  • Redundant power supply 10-30 VDC

  • Operating temperature -40 ° C to + 80 ° C

  • an op is compliant fiber optic connection (EN 60079-28)

  • op is fiber optic connections up to 15 km

  • Establishing fiber optic ring topologies in ATEX zones

Explosion protection

Test certificate : IBExU11ATEX1133X


Marking gas:

II (1) G [Ex op is Ga] II C T4


II (2) G [Ex op is Gb] IIC T4

Marking dust:

II (1) D [Ex op is Da] IIIC T135 ° C


II (2) D [Ex op is Db] IIIC T135 ° C

Marking mining:

I (M1) [Ex op is Ma] I


I (M2) [Ex op is Mb] I

Device group II, Cat. 3G:

II 3 (1) G Ex ec [op is Ga] IIC T4 Gc X


II 3 (2) G Ex ec [op is Gb] IIC T4 Gc X


Order numbers
Page 1 of 1
Technical specifications

Network specifications:

  • Optical transceiver, media converter

  • Output of op is compliant signals

  • LC connector

  • LED status display


Operating temperatur:

  • -40 ° C to + 80 ° C


Power supply:

  • DC: 10-30 VDC, redundant

  • Recommended protection: 1 AT



  • 100 Mbit models

    • 1 x 100 Mibt fiber optic / copper input

    • 1 x 100 Mbit fiber optic output opis

  • 1 Gbit models

    • 1 x 1 Gbit FO / copper input

    • 1x 1 Gbit fiber optic output opis

  • 1 x power supply


Dimensions (HxWxD):

  • 111mm x 24.5mm x 105.5mm



  • 340g

P-Ex WLAN V2.png

P-Ex WLAN v2

With the help of the P-Ex WLAN, high-performance networks according to the IEEE 802.3 (ETHERNET) and IEEE 802.11 (wireless LAN) standards can be implemented in an industrial environment. The diverse possibilities of Internet and intranet applications can now also be used in potentially explosive areas of production and process automation. Security features and encryption technologies are available as well as encrypted point-to-point connections. The device can be configured as an access point, computer or bridge.

  • 880 MHz dual core CPU for excellent routing performance

  • Operation of 2.4 GHz and 5 GHz band

  • IEEE 802.11 b / g / n and 802.11 ac

  • Security features: 64/128 bit WEP, TKIP and AES CCM encryption, WPA, WPA2

  • Standalone or controller operation possible

  • Configuration as an access point, router or bridge possible

  • Encrypted point-to-point radio links

  • 2.4 / 5 GHz combination antennas

Explosion protection

Test certificate : PTB 05 ATEX 2078 x


Labeling gas:

II 2G Ex ebq IIC T4


Labeling dust:

II 2D Ex tD A21 IP65 T135 ° C


data sheet


Type examination certificate


operation manual

Order numbers
Page 1 of 4
Technical specifications

Network specifications:

  • 1 Gbits / s Ethernet copper connection

  • Dual band IEEE 802.11b / g / n and 802.11 ac


Operating temperatur:

  • -20 ° C to + 50 ° C


Power supply:

  • Power over Ethernet (passive PoE
    or terminals for 24 VDC feed
    (11 - 28 VDC)



  • 1 x 1 Gbit / s copper input


Dimensions (HxWxD):

  • 280mm x 200mm x 80mm



  • 7.8kg

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