S-SM21 V switch

[awoods]

I would like to know if applying 12 volts dc to the top terminals will switch RX (receiver) between LNBF A and LNBF B? Also, is the polarity of the 12 volts at the top terminals is indcated by the 0/12 V on the left and the GND on the right. I wish to use an external 12 Volt supply and a manual switch to between two lnbs. Switches that use the coax cable seem to interfere with my dish rotor. Thanks for any assistance you can lend.

[Sadoun]

Yes, that is how it works. If 12V is present, the switch will switch to the 12V port. When there is no voltage, the switch will switch to the 0V port.