The Premium Protect Line 11-way high-end power strip with a 3 m cable features a practical automatic switching system: The master device (e.g., a computer) can include slave devices (e.g., monitor, sound system, printer, scanner, etc.) in the automatic control. With the on/off switch of the device (plugged into the red master socket), all devices (in the slave sockets) can be automatically turned on and off. The master-slave power strip is equipped with surge protection, safeguarding your devices from disturbances in the power supply, such as surges, indirect lightning strikes, or line noise, with a maximum total discharge current of up to 120,000 A. Additionally, high-quality protection against high-frequency interference is ensured, thanks to an integrated filter. It meets high environmental protection standards: minimizing standby losses, low self-consumption, and avoiding environmentally harmful materials.