Always have a backup trigger. A open/close sensor is hard to beat. They would have to know where it is and have access to it to bypass it. And for good measure a shock sensor to know if someone is trying to break it down.
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Always have a backup trigger. A open/close sensor is hard to beat. They would have to know where it is and have access to it to bypass it. And for good measure a shock sensor to know if someone is trying to break it down.