For safe and secure power usage, surge guards are a must-have. Our surge protected outlets include a 24-hour timed outlet, which provides simple control of electrical equipment. These recommended for use with another extension cord or power board, and are useful for powering down office appliances when not in use, on a daily schedule. The timer can be set for shorter intervals as well. A USB cable surge protector is available as well, featuring 4 USB ports as well as a regular wall plug. The Thor C2 smart filter features two wall plugs with filtered surge protection, specialized for AC outlets. SmartBrain technology allows it to filter and clean electrical frequency noise, in addition to protecting from power surges. This surge guard can greatly improve performance of electrical devices and minimize equipment risk.