Audible and visual alarm is set up to meet customers' special requirements for alarm loudness and installation location. At the same time, two alarm signals, sound and light, are issued. Special fields: iron and steel metallurgy, telecommunication towers, hoisting machinery, construction machinery, ports, transportation, wind power generation, ocean-going ships and other industries; it is an accessory product in the industrial alarm system. emergency alarm,Audible Visual Signals,Visual Alarm devices,sound and light siren,visual alarm system Taixing Minsheng Electronic Co.,Ltd. , https://www.ms-speakers.com
In SemiLEDs's unique design of MvpTM LED on metal alloy base, the lower voltage was achieved by a combination of proprietary technologies including careful design of epitaxial structure and current path in vertical LED chip configuration.
Available in a wide range of chip sizes, SemiLEDs new class of LEDs will significantly prolong the battery life for mobile appliances and simplify LED driver circuits, especially for cell phone flash, resulting in cost saving. These chips have been successfully introduced in the mega- Pixel camera flash for the latest models of cell phones offered by a top maker. 
Mvp LED for battery-powered mobile appliances
SemiLEDs ( http:// ) markets a new-generation, high-brightness, low voltage LEDs designed for battery powered mobile applications. These new GaN based LEDs available in blue and green colors feature extremely low operation voltage, normally Below 3V for standard current density, resulting in much longer battery life for mobile appliance applications such as flash for cameras, back light for notebook computer, small cell phone and PDA screens.