Grainger has the right devices to help you protect your sensitive computers and electrical equipment from equipment failure and costly downtime. An uninterruptible power supply (UPS) provides reliable and secure, cost-effective backup power and power protection for critical equipment. A basic ups power supply can provide enough backup power to work through short- and medium-length power outages. More sophisticated UPS systems have software for complete network power management and control. Surge suppressors help prevent system crashes, corrupted data files, disk drive errors, computer lockup, and hardware failure. Power conditioners protect from surges, spikes, lightning, and other power disturbances, while voltage stabilizers help maintain stable output voltage during peak loads on voltage-sensitive equipment