Not all Power is Created Equal / Surge protectors can wear out over time. Joules the protective layer of energy that defends your components are finite. When your household is hit with small electrical spikes, your surge protector sacrifices Joules to protect the connected components The blue protection shield icon LED will cease to illuminate once the Joules have been used and its time to replace. It features 2500 Joules and is rated to last more than five times as long as most power products. Flameless MOV Protection gives you peace of mind that powerful surges will not result in a dangerous fire Fire & Power Spike Safety / Austere surge protection regulates the power coming from the outside powerline to ensure devices do not burn out from a high voltage spike Austere Power sits flush with the wall and fits discreetly in the tightest of spaces near furniture or behind a wall-mounted TV.