A standby or off-line UPS is a basic, inexpensive UPS that feeds power to the load directly from the utility and then transfers to battery power via an inverter after utility drops below a specified voltage. The delay between utility power loss and inverter startup can be long enough to disrupt the operation of some sensitive loads.
MaxPower offers the following standby UPS:
Xtreme Power Conversion XST Series
400–800 VA
Standby UPS
350–700 VA
Standby UPS