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The gate is a detector that detects if there are metal objects, or metal detection doors. Mainly used in airports, stations, large conferences and other popular public places to check people's physical hidden metal objects, such as guns, controlled knives and so on. When the inspectors from security through, carries on the body shape of metal more than according to the weight, quantity or predefined parameter value, the security immediately alarm, and display alarm caused by metal and location, make security personnel find such person carry metal items in a timely manner
Prior to the release of the dispatch order, it is necessary to understand the situation of the site in detail, to hear the opinions of the relevant personnel, to write the contents of the order, and to make the premises correct, complete and clear.
For a lamp we want two wires; you are the neutral wire as well as the other is the live wire. These two wires are connected through the lamp for the main supply panel. It is advisable to use different colours for live wires and neutral wires. The universal practice is to use along with red for live wires as well as a black colour for the neutral wire. For switching ON and OFF the lamp we need a control known as a switch - provided inside live wire between the main supply and lamp. If the switch is ON, the electric circuit is closed and also the lamp glows, and if the switch is OFF, it'll disconnect the ability supply on the lamp. For safe operation this wiring is positioned in a box known as a switch box. The switch wire and live wire certainly are a single wire; it's just cut among for connecting the switch. In case you want to change the lamp, don't forget to switch OFF the lamp and if possible disconnect the electricity supply towards the circuit.
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