The need for security systems is growing every day. These days every institution has an alarm system, and people houses are beginning to catch up. One of the features included in most security systems is the sms notification, which the author thinks is not as reliable as Ethernet Notification system because GSM networks can have a congestion at the time the alarm.
Well i disagree with the author, and i think the SMS notification is much more reliable than Ethernet, in fact from my experience Ethernet Networks tend to fail more often that GSM networks. So if you’re thinking of building a security system, i would suggest a SMS notification system instead of an ethernet one, in my opinion sms is more reliable.
Ethernet based Security System sends you an Email when the alarm goes off: [Link]
Protect Your Home with Laserbeams - video powered by Metacafe
Here is an easy to make and powerful laser alarm system that can protect your entire home, indoors or out! My inspiration for this project came from Brad Graham & Kathy McGowan. Watch the video for details and the Test Results. You’ll be impressed. I hope you enjoy this Instructable.
DIY Laserbeam Alarm: [Via]
This is simple, and the pictures tell you enough. Denkimono.com offers you the possibility to buy a kit of this alarmclock/timer that you can assembly yourself. It is available in 2 modes as a kit or ready assembled. The kit comprises of a PCB and all the necessary components.
The assembled version comprises of a fully populated and tested CPU and display PCB. All that is required is for the two boards to be connected together and mounted on the battery. Printed instructions are provided with both forms of the product. I don’t think they supply you with schematics. That would have been nice to give others the opportunity to build the project themselves. But its their idea and their right to sell it. For full details and ordering click the Link.
