UPS bypass modes let systems switch loads to utility power automatically or manually during maintenance, repairs, or UPS failures. Both keep your equipment running. In the world of energy storage and power management, two crucial technologies ensure uninterrupted operation during power failures: UPS (Uninterruptible Power Supply) and APL (Automatic Power Load). These functions play a vital role in stabilizing power supply, especially in off-grid and hybrid. AVR is also known as Automatic Voltage Stabilizer (AVS). This is an added feature on a Line Interactive Topology UPS. Modem&Router,Smartphone,PC Desktop Computer,Network-attached Storage). AVR and Outlets: Automatic Voltage Regulation protects connected devices by stabilizing incoming voltage. Normal mode—Describes a condition in which the battery is charged, the input voltage is in range and the output is loaded within the allowed limits.