When there’s a power outage in your home, your router & the life-sustaining wi-fi signal it provides are toast. That is, unless you have the APC 600VA UPS Battery Backup & Surge Protector. When the power cuts out, this clever device turns on, keeping your wi-fi signal intact & online. You can even use it to recharge your phones, laptops & other devices if the outage lasts a while.