The APC SMT1500RMUS Smart-UPS allows you to feel confident that your electronics will remain safe and secure during a power surges, outages, or spikes. The Smart-UPS periodically runs self-tests to ensure that you have early notice of when a battery needs to be replaced. The power management of the UPS can be managed through the network to provide ease of use even in remote locations. The audible alarm actively lets you know if the battery is low or if there is an overload condition.