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4822 Sterling Court
Boulder, CO, 80301


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Robotic and automation sensors for 1D laser rangefinders (LIDAR), 2D scanning lasers or LIDARs, 3D time-of-flight cameras, digital compasses, programmable USB hub, programmable ethernet controlled relays, programmable USB controlled relays.

8 channel 16A Ethernet Relay module

Devantech ETH008 Ethernet - 8 x 16A relay module R374.jpg
Devantech ETH008 Ethernet - 8 x 16A relay module R374.jpg

8 channel 16A Ethernet Relay module


The Devantech ETH008 Ethernet relay board provides eight voltage-free contact relay outputs with a current rating of up to 16A each.

SKU# R374-ETH008

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The Devantech ETH008 Ethernet relay module is powered from a 12VDC supply which can be regulated or unregulated. The DC input jack is 2.1mm with positive core polarity, DC supplies are required to supply at least 500mA at 12VDC. The relays are SPCO (Single Pole Change Over) types. The normally open, normally closed and common pins are all available on the screw terminals. The ETH008 is fully compatible with the ETH-RLY16 and includes the legacy ETH-RLY16 command set.

Devantech offers a precision case for the ETH008, it can be purchased here.  

The ETH008 has additional features over the ETH-RLY16:

  • Full Factory Reset, all ETH008 firmware and settings can be reset to the original state.
  • Firmware updates, firmware in the ETH008 is fully updatable by re-flashing the board with our custom windows program. This will be made available in the event of feature updates.
  • New Command Format, the new command format allows for consistent compatibility with future boards. New commands now allow for pulsed control of relays from 100ms to 25.5 seconds.
  • TCP/IP Password Protection, it is now possible to set a password for TCP/IP protection. This is independent of the configuration password.


Technical Documentation



Power12VDC adapter, not included

Configuration & Test InterfaceHTTP (webpage)

Control InterfaceTCP/IP over Ethernet

Relay CurrentUp to 16A @ 24VDC or 250 VAC

ConnectionsScrew Terminals for N/O, N/C and common contacts