The SIMATIC HMI Connection Box Compact (6AV2125-2AE03-0AX0) is a compact connection box from Siemens’ SIMATIC HMI series, designed for installation in control cabinets. It supports PROFINET and PROFIsafe protocols, enables connection of a safety relay, and includes connection point detection. With a net weight of 0.465 kg and packaging dimensions of 12.10 x 14.60 x 8.80 cm, it is used in industrial automation projects, particularly for secure and reliable connection of mobile HMI panels.