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Motion sensor Suppliers for 230v PIR based motion detector with 360° and 180° angle of coverage, area of detection and reach upto 20 metres. These PIR movement sensors for lighting can either be ceiling or wall mounted and is available in Passive Infrared (PIR) and ultrasonic / microwave technologies.

From Gabriela Grosseck

Have you ever wanted to create short "how to" video for your students to use for homework, remembering facts, and solving math problems. How often have your students stated, "I could not complete the homework assignment, because I could not remember the steps and no one could help me." Well the answer is to create a screencast or video for posting on your class wiki or blog for students to view at home or anywhere else they have web access.

Customer Reviews Average Customer Review: 4.5 out of 5 stars based on 15 reviews Most Helpful Customer Reviews from Amazon.com 85 out of 85 people found the following review helpful: 5 out of 5 stars This is THE Android phone to get if you're on AT&T! June 29, 2010 Reviewer: D. Matheny (Austin, TX) - Well, my wife and I have been using our new Aria phones for about a week now. I switched from a Blackberry Bold and she was using a 1st generation iPhone (although hers didn't have any data plan). We also purchased one of the 3G MicroCells from AT&T at the same time - so our cell signal at home is now better than I thought would be possible. As far as our profiles go: I'm a tech addict - I work at home as a C/C++ programmer and tend to be an early adopter of anything tech related. My wife is kind of the opposite - she relies on me to keep the tech stuff going and tends to resist new technology since she knows it can often be more of a headache than it is worth:). Fortunately, this phone is working for both of us. The Android OS has been great - although there are some features in the next version (Froyo) that I wish were on this phone already. I spent several hours yesterday figuring out how to 'root' this phone and I did end up getting it done last night. My wife's went a lot faster since I already understood the process.

The use of web based technology is growing by leaps and bounds every day. These online tools are the new set of keys for opening your students' minds. The vast resources on the Internet are making the use traditional methods of teaching and learning obsolete in countless ways.