I'm probably not understanding how these relays are supposed to work so forgive me in advance. See the picture below. I'm just testing mode and trying to figure out if I can use this with my BCS-460 to control my freezer for fermentation. I'm under the assumption that when the relay board gets the 5v signal from the BCS, the relay board is supposed to trigger the relay to switch to the other side. I'm trying to verify this by checking continuity at the switch. When it has no power applied I am getting continuity at the spots where it shows normally closed. However, when the 5v is received from the BCS, the switch doesn't flip. Can someone help? Do I have the understanding of this relay all wrong?