The Bachmann STEP ALU device protection with GST18 is a modular socket unit specifically designed to protect electrical devices. This unit offers comprehensive surge protection, network filtering, and frequency filtering to ensure a stable and safe power supply. Its modular design allows individual modules to be connected as needed or flexibly combined with a connecting cable, enabling customization to meet various requirements. The product is a successor model to type 336.004, providing enhanced features and reliability. The STEP ALU device protection is ideal for use in offices, living spaces, or other environments where a safe and efficient power supply is necessary. With its high-quality workmanship and thoughtful features, this accessory is a valuable addition to any switch program.