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 free apps for mobile Android and iOS devices that allow remote control of both WiFi and Ethernet enabled relays. They can be downloaded for free through Google Play and iTunes. Search for "Devantech" to find the apps at either location.
Devantech offers a precision case for the ETH008, it can be purchased here.
The ETH008 has additional features over the ETH-RLY16: