Philips SPN5085A/10 surge protector is designed to keep your electronic devices safe from electrical surges. It features advanced technologies such as Power Blocker® circuitry, which automatically shuts down power to your system to protect against subsequent surges. The surge protector also has 2700 Joules of protection, protected phone and coax connections, and a 3 m power cord. It is easy to use, with built-in cord management and automatic child safety outlets. Protection indicators let you know if your surge protector is functioning properly.