The DIN rail power supply is the ideal solution for building automation and security technology, where multiple devices require constant DC voltage and higher current, such as intercom systems, cameras, and lighting. Its compact, stepped design makes the power supply perfect for tight spaces with demanding heat requirements, such as in control cabinets or distribution boxes. The 12V power supply is suitable for building automation, including complex intercom systems, LED, lighting, surveillance, and alarm systems. It can be quickly and easily mounted on a DIN rail with a hat profile using a click system, for example, in a control cabinet. The DIN rail transformer converts input voltage in the range of 100-240 V AC to 12 V constant DC voltage, accessible via two DC outputs. It features a variable adjustable DC output voltage of 10-14 V and a high efficiency. The switching power supply is particularly safe thanks to overvoltage, overload, and short-circuit protection, IP20 protection class, and safe electronic isolation according to protection class II. The 230 V to 12 V transformer is passively cooled via convection and connected using touch-protected screw terminals. It includes an integrated LED indicator that lights up continuously during operation or when the power supply is functioning correctly.