netio - Rel4


The net io - Rel 4 is a switching module for DIN rail mounting. It is powered directly via POE and therefore does not require an additional power supply.

net io - Rel 4 enables the switching of up to 4 load circuits with 230V/8A and is therefore mostly used in electrical sub-distribution and switch boxes. The product offers a comfortable possibility to switch electrical loads on or off via the media control.
net io – Rel 4 can communicate with the media control via a TCP/IP network.
All switching contacts are designed as changeover contacts.

A special automatic switch-on feature prevents relays from „sticking“ during switching operations,  especially with inductive loads.

Configuration takes place via the integrated web server.



  • Dimensions: 106 x 90 x 57 mm
  • 6 TE diner rail housings for mounting on DIN rail
  • Microcontroller: 32 MHz CPU, 32 kb SRAM, 256 kb Flash
  • Protocols: UDP, MQTT (integrated web server for configuration)
  • 4 relays
  • Network: 10/100BaseT autosensing, IEEE 802.3af compatible
  • Power supply: Power-over-Ethernet (PoE)
  • Connections: 4 x pluggable screw terminal (4-fold) for IOs
  • 1 x RJ45 connector for network