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A residual-current device (RCD), residual-current circuit breaker (RCCB) or ground fault circuit interrupter (GFCI) [a] is an electrical safety device that interrupts an electrical circuit when the current passing through a conductor is not equal and opposite in both directions, therefore indicating leakage current to ground or current flowing to another powered conductor.
Each sensor has the ability to monitor hostile territory, international borders, and/or detect indirect weapon fire covertly with 24-hour surveillance. These small, inexpensive, non-imaging sensors can monitor large areas without a significant need for power sources and manpower.
Surface acoustic wave sensors are a class of microelectromechanical systems (MEMS) which rely on the modulation of surface acoustic waves to sense a physical phenomenon. The sensor transduces an input electrical signal into a mechanical wave which, unlike an electrical signal, can be easily influenced by physical phenomena.
An earth-leakage circuit breaker (ELCB) is a safety device used in electrical installations with high Earth impedance to prevent shock. It detects small stray voltages on the metal enclosures of electrical equipment, and interrupts the circuit if a dangerous voltage is detected.
Sound recognition is a technology, which is based on both traditional pattern recognition theories and audio signal analysis methods. Sound recognition technologies contain preliminary data processing, feature extraction and classification algorithms. Sound recognition can classify feature vectors.
Ginger-flavored beverages are barroom staples, the indispensable spicy-sweet partner to some of your favorite drinks. A Dark 'n Stormy and various Mules and Bucks wouldn’t be complete without ...
President-elect Donald Trump was sentenced Friday in his New York criminal hush money case. But he has already pledged to appeal.
Gunner G1 Kennel This durable dog kennel is perfect for travelling and has a five-star crash test rating from the Center for Pet Safety. Our tester, Lindsey, says: "My dog loved it, there is lots ...