The Devantech ETH002 Ethernet 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 ETH002 is fully compatible with the ETH-RLY02 and includes the legacy ETH-RLY02 command set.
Devantech offers a precision case for the ETH002, it can be purchased here.
The ETH002 has additional features over the ETH-RLY02: