Principle of selection of lightning arresters

The signal lightning arrester is mainly equipped with lightning protection devices on the communication signal line, mainly including: video signal lightning protection device, network signal lightning protection device, audio signal lightning protection device, control signal lightning protection

Common problems with industrial grade switches

1. What is data exchange? Broadly speaking, any data forwarding can be called data exchange. The process of using the switch is Ethernet-based data exchange. The network data can be exchanged to reach the designated port. 2. What is a switch? A switch is a network device based on MAC address id

What are the characteristics of led energy-saving lamps?

LED energy-saving lamps are a new generation of light sources after compact fluorescent lamps (that is, ordinary energy-saving lamps). LED energy-saving lamps are environmentally friendly, contain no mercury, can be recycled and reused, have low power, high luminous efficiency, and long life. Swit

New energy cars need an open era

After a large amount of fog, which has a large intensity, a wide range, and a long time, China's new energy vehicles seem to have ushered in a glimmer of light. On February 25, the “Notice of the Fifth Batch of Privately Purchased Subsidy Product Information for New Energy Vehicles in S