Whitenergy 10391 is a rectangular shaped, black and silver surge protector with six protected connection sockets. It features LCD dimming, overload protection and a built-in LED light that indicates if a device is properly connected. The 10391 surge protector also has advanced fire-proof design to protect against spikes of up to 4,000 volts, ensuring safe connection to all of your home appliances. In addition, it uses an anti-surge/spike technology to protect connected devices from sudden voltage surges and lightning strikes, making it a safe choice for any household.