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"This is a tragic story," Sandy McFarlane, a post traumatic stress disorder expert, told ABC1's Lateline. Related News. Two more Indian students attacked in Australia. August 10th, 2009 MELBOURNE/INDORE Two more Indian students were separately assaulted by a group of men in Australia. Gaurav Kakkar, a student of a hairdressing course, was attacked by a group .

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In general, a 2GHz system can keep constant connection with wireless components in about an acre worth of residential area. One disadvantage of the wireless system is that the components will eventually run out of battery life. It is therefore necessary to invest in a dependable battery backup system not only in case of emptying battery life but also to continue to protect your home even in the event of a power outage or a break in attempt by an intruder. Also, note that it is better to buy equipment that is powered by rechargeable batteries. They may have a larger upfront cost, but will prove to be more economical in the long run. Look for a system that notifies you or gives an alarm that can alert you if which batteries are running low.