There are 4 parts to an Alarm system in DromEd. First, The button, of course. It does not really have to be a button, it could be a switch, but once thrown, it's triggered. Then there's the Alarm (Light), which has the sound emitting from it. Now for the two parts you don't ever see, the RelayTrap, and the DestroyTrap!

Well, how does that work you say? Yes, I will assume you asked that, rather than hurled an insult at me having to do with my birth and my one thousand mothers. Well, all of the items kinda make a flow chart. First the button, to the RelayTrap, then that triggers the DestroyTrap and Alarm, and the Destroy Trap leads back to the Relay. That may sound more complex than it actually is, due to me grapple of the languagish known prewiously as it is called Englisch.

Now, first you want to create all your items and remember their numbers. If you cannot remember their numbers, please visit this site ( Note: This isn't my site. ). If their instruction cannot help your plight, I suggest you simply write down the numbers.
Here are my suggestions:
 

• Button:  While it might seem interesting and amusing to create a floating button, please put it up on the wall. Hundreds of guards loose their eyes a year by walking into those things. It's a mess. Red Cross has camps set up where hundreds of guards lie, moaning about the dinners that they never got and how damp their patrol routes are. Prevent this by donating to  The British Red Cross (Yes, you want this one, since we really don't use 'creative' English like Taffer here in America).
• Alarm/Light:  Alright, now you could just put this sucker up on the wall. By why be so uncreative? Why not have it hanging straight down from the roof (Note: Should be high enough to avoid Guard's head. Second reason why Guards loose eyes, see Red Cross Link above.)? Or,  create a gargoyle and have two Alarm lights protruding from either side of it's head like red glass earmuffs?
• RelayTrap and DestroyTrap: Put these someplace where you can remember where you put them. You won't see them in the level.

First, linking is very easy. You use a tool  like this one, to open your monitor. Once inside, locate the Button, RelayTrap, DestroyTrap, and Alarm and connect them  with this. Or, try it this harder way:

Alright, let's start with that Button. First, the Button should have a link on it to the RelayTrap, like this:

• Flavour: ControlDevice
• From: (Your Button Number)
• To: (Your RelayTrap Number)

Here's what the RelayTrap should look like.

• Flavour: ControlDevice
• From: (Your RelayTrap Number)
• To: (Your Alarm Number)

• Flavour: ControlDevice
• From: (Your RelayTrap Number)
• To: (Your DestroyTrap Number)

Now, let's say you had multiple Buttons and multiple Alarms. In the case of more Buttons, just go ahead and link from them to the RelayTrap. In the case of more Alarms, just make more links from the RelayTrap to the Alarms.

Finally, the Destroy Trap:

• Flavour: ControlDevice
• From: (Your DestroyTrap Number)
• To: (Your RelayTrap Number)

Ah, so it's all set up? Excellent. Now, stick a Guard in there. Carefull not to place him too close to the button, you know what happens. Now, edit his properties.

Here you must add a MetaProperty to get him to use the Alarm System you've installed. Click 'Add', then 'MetaProperty', then 'AI_Behaviors', then 'AI_B_m5', and finally 'RingTheAlarm'. Excellent. Now click on this in the Properties window, and edit it. It should read under RingTheAlarm, AI, Responses, Alert Response:

• Alert Level: (3) High
• Priority: 'Very High' or 'Absolute' means they'll usually run right for the Alarm at first sighting of the Player.

• Goto Object
• (Your Button Number)
• Very Fast

• Face
• (Your Button Number)

• Play Sound/Motion
• Under Arguement 3 (not sure why it's here): WorldFrob 0, AtWaist 0

• Frob Object
• (Your Button Number)

• Add/Remove Meta-Property
• Add
• M-HeardAlarm

• Add/Remove Meta-Property
• Remove
• RingTheAlarm

I hope all of this has helped, and don't forget to look at Mission 5 (Assassins) if you get confused.
-A LITTLE MOUSE