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Expert Net Control 2104

Remote I/O System with 1 relay output for TCP/IP networks

Expert Net Control 2104 allows remote controlling over TCP/IP networks. The device disposes of a potential-free relay ouput (NO/NC) that can also be switched through a button on the device.


Expert Net Control 2104


  • 1 relay output
  • 1-channel watchdog
  • Compact plastic case (50 g)
  • Connection by PTR multiconnectors
  • Free smartphone app for remote access


  • 1 switchable, potential-free relay ouput (NO and NC), switching voltage 24 V, 0.5 A
  • Device button allows manual switching of output
  • 1-channel watchdog to monitor connected consumers (ICMP/TCP)
  • Programmable turn-on/turn-off sequence (batch mode) enabling automatic switching of relay contact to previous state after configurable time period
  • Compact housing
  • Free Android App and iPhone App allow access from anywhere
  • Power supply via accompanying Power Supply Unit 7901 (12 V, 500 mA)
  • Low internal power consumption
  • Developed and manufactured in Germany


  • Dynamic IP address allocation by DHCP or manual allocation with static IP address
  • Firmware update over Ethernet during operations (without reboot of device or output)
  • SNMP Get/Traps (SNMPv1, SNMPv2c)
  • Syslog support
  • E-mail support
  • IP Access Control List
  • Access control through optional HTTP password
  • Comfortable configuration by web browser, Windows or Linux tool
  • 10/100 Mbit/s
    Switching relay outputNetwork interfaceiPhone/Android App for remote access
    Electrical Connections
    1 DC socket for external power supply unit
    1 switchable output (PTR multiconnector, 3-fold)
    1 Ethernet connector RJ45 (10/100 Mbit/s)
    Technical Details
    Plastic case
    LxHxW: 78 x 22 x 37 mm
    Weight: ca. 50g
    Operating temperature: 0-50 °C
    Storage temperature: -20 - 70 °C
    Relative humidity: 0 - 95 % (non-condensing environment)
    Order code
    Scope of delivery
    Expert Net Control 2104
    Power Supply Unit 7901
    Set of PTR multiconnectors
    Quick start guide
    Description File name Version Date Size Changes to previous version/Comments
    Manual anleitung-enc2104.pdf 1.0.1 17/05/2013 740.20 KB

    User manual (German)

    Product Brief product-brief-enc2104.pdf 04/07/2014 95.28 KB

    Short product description

    Quick Start Guide schnellstart_quickstart_ip-devices.pdf 1.2 08/09/2017 499.21 KB

    Quick start guide (leaflet)

    Declaration ce-declaration_enc2103-2104_15-06-2015.pdf 15/06/2015 47.10 KB

    CE declaration of conformity

    Firmware firmware-enc2104_v1.0.2.bin 1.0.2 10/05/2012 282.94 KB

    Latest firmware, requires 'gblconf' or 'gblc' for installation

    • Bugfixes: ICMP ping of death

    System Tool gblconf_v2.7.11.exe 2.7.11 11/09/2017 793.35 KB

    Windows-Tool for firmware updates and network configuration

    System Tool gblc_v0.7.7.tar.gz 0.7.7 07/05/2013 130.53 KB

    Linux-Tool for firmware updates and network configuration