I bought mine originally from Lawrence and Hanson Electrical in Nambour. From memory (two and a half years ago now) it was about $110. Its got all the bells and whistles where you can monitor it and do other stuff with it from a laptop. Never bothered. One thing I do like about this one over the only other one I've used is that when power goes back on the alarm resets and shuts up. I've conveniently forgotten the other one but even when the power came back on it was still screaming and you had to reset it before the power would flow. Pain in the neck it was, literally as it was under the floor of the Mapleton observatory and you had to get down on hands and knees to get under the floor to reset it. Stoopid thing.
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