[SOLVED] Relay won't switch from NC to NO

mwhite494:
Coil resistance is 400 ohms, and I tried to switch it using a 9v battery still no luck.

12v relay but max voltage is 8.4v

Kinda like saying... here's a pint glass but we will only fill it 3/4ths of the capacity?!

The 8.4v is for the the coil, you can run 12v through the pole.

nope :

Coil Current 30mA
Coil Voltage 12VDC
Contact Form SPDT (1 Form C)
Contact Rating (Current) 10A
Switching Voltage 277VAC, 28VDC - Max