Use one 433 MHz transmitter for a magnetic contact or garage-door tilt zone plus two normally closed external-contact zones, each with its own serial number.
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Listen for framed-glass breakage with a PowerG+ acoustic detector offering up to 25-foot coverage, 360-degree listening, and modern battery reporting.
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Protect windows and glass doors with a PowerG acoustic detector providing 360-degree listening, up to 25-foot range, and five-year battery life.