ok sorry its taken me so long to reply, i was getting an error accessing the site last night
I put my lamps across it and it is closed when the magnet is in place,I asked the guy I bought it off and he said that's what is should be doing so it isn't a N/O contact, I will try the in line resistor now, but it wasn't showing tamper? it was saying 1001 door open when it was setting and then would only set if the i opened the door.
thats automatically what i thought as well, and then thought the contact they had sent was the wrong one, but it is 100% closed with magnet in place