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it going to have a internal locking curcuit, wich lock the cabinet, so nobody can open it, it have a RS232 port, so it can comunicate with the computer, if sombody tries to move the computer, theres goes of a alarm
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What good will this do? If someone is going to get into your comp that will not really do much good being you will not be around to hear the alarm? Locks are easily broken on comps, hell they will just take the whole thing and pop it at home. And will the alarm work with the power plug removed?
Sounds like a baby/kid proofing is about all that's good for.
Other than that I wouldn't buy it because I have no use for any of that exept the auto shut off at a certain temp, but I am already about to make one of those. Fan monitoring is pretty useless being I use my self made voltage controller to turn them down to where they are quite and don't really care about RPM. But for someone who cannot do that by themselfs it maybe appealing.
I like the PWM (Pulse Width Modulator) for fan control, but it is really way more than you need to control a computer fan, but it is probably the most effecient.
AND before anyone can tell you if they would buy one you need to show a final working version that looks professional. otherwise you will not get much feedback on it.
May be weed out the not so usefull stuff and stick to what enthusists will actually use ,to cut cost, being they will be the main market. Fan control, thermal control, temp sensors.
Good Luck.