Does this help? It probably does but if I may ask why do you need something as complex as this?
Product Description
1 Piece DPDT Signal Relay Module Board.
This item has been assembled, and electrical test passed.
Japan FUJITSU TAKAMISAWA high quality signal relay, FR-4 Fiber glass PCB, darlington transistor driving relay, LED indicator for relay action.
Size: 50 x 34.9 x 16 mm (approximately 2" x 1.37" x 0.64"), PCB thickness: 1.6mm.
Power Supply: 12V DC / 30mA (relay ON).
Input control signal voltage:
0V - 0.5V Low stage (relay is OFF),
0.5V - 2.5V (unknown state).
2.5V - 24V High state (relay is ON).
Input control signal high state current:
2.5V: 0.1mA
5V: 0.35mA
12V: 1.1mA
20V: 1.9mA
Relay:
FUJITSU TAKAMISAWA RY12W-K signal relay.
Contact Material: Gold Overlay Silver-Palladium.
Datasheet: http://www.fujitsu.com/downloads/MICRO/fcai/relays/ry.pdf