Recently, it was learned from Fangda Group that the company has formed a complete industrial chain from LED epitaxial wafer, chip, package, phosphor to semiconductor lighting engineering application product development and manufacturing to terminal market promotion and application. It is China's patent ownership in semiconductor lighting field. The most companies. Fangda Group's semiconductor lighting industry includes semiconductor epitaxial wafers, chips, packages and various LED luminaires, LED floodlights and landscape lighting system applications. According to reports, semiconductor lighting is called the fourth generation of lighting source, with energy saving, environmental protection, long life, small size and so on, can be widely used in a variety of indications, displays, decoration, backlight, general lighting and urban night scenes. Fangda Guoke Company first developed a high-power high-luminosity semiconductor light-emitting chip with independent intellectual property rights in China. It is one of the few enterprises in China that has mastered the key manufacturing technologies of semiconductor lighting and LED fluorescent lamps. At present, it has 145 patents in the field of semiconductor lighting. Among them, the invention specializes in e
Magnetic Contact is a kind of security alarm device, consists of two parts, wireless transmitter and permanent magnets, used to detect the door, window and drawer is illegally open or mobile, divided into wireless magnetic door, gate magnetism, cable magnetic door 3 kinds.
Magnetic Contact is a security alarm system, door magnetic, window magnetic (same principle, different shape). door/window magnets are not easy to see if you don't pay attention to them.So-called magnetic magnetic door/window is short for window door magnetic Switch and magnetic switch, consists of two parts: small parts for permanent magnets, inside has a permanent magnet, used to generate a constant magnetic field, the magnetic door is the main body, inside it there is a normally open type dry reed pipe, when the permanent magnet and reed pipe very close (less than 5 mm), door Magnetic Sensor is in a state of work waiting for you, when permanent magnet after leaving the dry reed pipe length, in a normally open state.Magnet and reed pipe respectively installed on the frame (frame) and the door leaf (casement), basically all is embedded installation (also have a surface type installation), so it's not the industry generally is not able to notice these.You can open the ledger of outside the door and window, look at the household outside door frame at the top and the sash of the window, can see the rounded, usually in white components, and in fact this is the so-called door magnetic, magnetic window.
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