The final draft of the international standard for the "Lamps - Part 2-17: Special Requirements - Lighting for Stage Lighting, Television, Film and Photography Places (Indoor and Outdoor)" by Shanghai Times Light Lighting & Electrical Testing Co., Ltd. was recently approved and approved. release. The standard is the first international standard for lighting fixtures revised by China. It mainly studies the safety requirements and test methods for the structure, heat and protection against electric shock of lighting products for stage lighting, television, film and photography (indoor and outdoor). This revision extends the scope of the standard to luminaires that use electric light sources, including LEDs, while taking into account the irreplaceable, low-heating structure and thermal characteristics of LED light sources, and amend the relevant provisions to introduce such products into LED light sources. After that, there is a larger space for design and development, which is conducive to the development of China's lighting industry. The revision of the standard fills the gap between international standards for LED lighting for stage lighting, television, film and photography (indoor and outdoor), marking the Chinese lighting industry to win the standard voice in the international arena. Omni-directional antenna, that is, in a horizontal direction on the drawing performance for 360 "uniform radiation, omnidirectional is usually said. Normally lobe width is smaller, the greater the gain. Omni-directional antenna application in communication system in general, the closer range is big, the price is cheap. Gain general under 9 db. Shown below for the omni-directional antenna signal radiation pattern. Omni Directional Antenna for TV,Omni Directinal Wifi,Omni Directinal Outdoor,Omni directinal Indoor,Omni Directional HD Antenna Yetnorson Antenna Co., Ltd. , https://www.xhlantenna.com