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Alarm Output: 95db @ 1M. Frequency available: 433MHz/ 868.35MHz FM/ 868.6375MHz Narrow Band FM. Range: 433MHz : over 200 meters in open space. 868.35MHz FM or 868.6375 MHz Narrow Band FM: over 300 ...
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What Is a Burglar Alarm?In 1877, Holmes established the first network of alarms monitored by a central station. The Holmes Burglar business was ...
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