The core components of this product adopt imported famous brand surge absorbing devices. After strict screening, the performance is superior and the quality is stable. The product has a built-in semiconductor surge absorbing device with accurate clamping and extremely low residual voltage output. Select the appropriate limiting voltage for different systems to achieve the best protection for the device. This series of products should be selected according to the interface of the equipment or the actual installation requirements, such as interface terminals, RS232, etc. The protection path can be divided into single, double or multi-channel numbers. The number of products can be single or multiple integrated packages.