Looks like the older Active Home Interface CM11A with a RS Part Number. It could control your Security Lights like any other X10 Module. I doubt it would trigger from the Security Console and sound a siren as they need a cycle of on off signals to trigger.
Which RS Console is it? The older one I believe will trigger sirens the 49-1000 does not as it sends two security addresses and the sirens get lost on the second address.
