The development of network video surveillance technology has gone through four stages:(1) Close-range Monitoring:In the early stage of video surveillance, video images were transmitted from the front-end monitoring points to the monitoring center through coaxial cables and displayed on the monitoring equipment. As the number of monitoring points increased, the cost and management difficulty of video display and recording equipment also increased significantly. The introduction of video matrix technology effectively addressed these issues by allowing multiple video images to be switched, displayed, and shared. However, analog video transmission was limited and did not support multi-center and...

IntroductionIn recent years, concerns about radiation exposure from various electronic devices have grown. As a leading brand in the monitoring equipment industry, OHWOAI values the well-being and safety of its customers. In this article, we will address the topic of radiation from monitoring devices and explain the different types of radiation they emit. We aim to provide our customers with accurate information to make informed decisions about their security needs.Types of RadiationRadiation can be broadly categorized into two types: ionizing radiation and non-ionizing radiation. Ionizing radiation, such as X-rays and gamma rays, has high energy levels...

As the prevalence of surveillance cameras continues to surge and the demand for cutting-edge security solutions grows, driven by decreasing prices and heightened awareness, a plethora of individuals are seeking an in-depth understanding of these modern sentinels. In this comprehensive exposition, we, at OHWOAI, are poised to illuminate the inner workings of surveillance cameras, dissecting each component and structure to provide you with a multidimensional comprehension.   Upon receipt of a surveillance camera, the first element that catches the eye is its exterior casing. However, it's when we venture beneath the surface, beyond the exterior veneer,...