TREA

System arrangements wherein the alarm criteria uses signal strength

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Industry

  • CPC
  • G08B21/0247
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Parent Industries

GPHYSICS G08Signaling G08BSIGNALLING OR CALLING SYSTEMS ORDER TELEGRAPHS ALARM SYSTEMS G08B21/00Alarms responsive to a single specified undesired or abnormal operating condition and not elsewhere provided for

Current Industry

G08B21/0247System arrangements wherein the alarm criteria uses signal strength
Industries