Junction Box, often referred to as junction box, is a widely used device in the field of electrical engineering, which is mainly used for the connection and distribution of wires or cables. It is available in various types, including plug type, general type, waterproof type, explosion-proof type and splash-proof type, etc., to suit different working environments and needs. In the field of photovoltaic, solar PV module junction box is a key component in the PV system. It is usually installed at the center of the back of the PV module, and its main function is to concentrate the battery current and transmit it to the output of the panel. The junction box contains cables, diodes, fuses and connectors, etc. In addition to serving as a power transmission and protection device, it also helps to manage the PV system and improve efficiency and production.Junction Box is a device that groups the inputs, outputs, and other connection interfaces on the effects board into one place, making it more convenient to build an effects system and reducing the wear and tear of cables and interfaces to facilitate troubleshooting. Convenient for troubleshooting.