Hold on to those as they are going to be some very fun devices in the future!
They use 32 bit X10 protocol, and currently are unsupported by LMCE. You need a W800RF32 or similar in the future to use them. I am currently working on a w800RF32 driver, so hopefully they will work in 0804
Also, these are great devices, as you can take the leads off of the magnetic sensors and connect them to just about anything. If the leads touch, it emits the tripped signal. For example, hook the leads up to the little metal strip that flaps in your smoke alarm, and if it goes off, have it trigger LMCE to call the fire dept, etc.
Very interesting possibilities with these