Specifications

2
Transfer Voltage and Sensitivity Settings
Automatic Voltage Regulation
This Back-UPS unit has Automatic Voltage Regulation (AVR). If the input utility voltage drops below a
level that is safe for the operation of the connected equipment, the unit will boost utility voltage up to
safe level. It will also compensate for high input utility voltage by lowering it to a level that is safe for
the connected equipment.
The Back-UPS will switch to battery power if the input voltage level becomes too low for the Automatic
Voltage Regulation to compensate, or if the utility power is distorted.
No-load Shutdown
If the UPS is operating on battery power and detects that the connected equipment is using less than
15 W of energy for more than 15 minutes, it will shut down to conserve energy.
When the UPS is reconnected to utility power, the UPS will automatically switch on.
Note: Even if the UPS is OFF, it is still protecting connected equipment from power surges.
Adjust the settings
If the Back-UPS switches to battery power too frequently or too infrequently, adjust the transfer voltage
and sensitivity settings:
1. Ensure the battery is connected and that the Back-UPS is OFF, but connected to utility power.
2. Press and hold the
ON/OFF button until the LED repeatedly flashes.The unit is now in Program
Mode.
3. Release the button. The LED will indicate the current setting by flashing once, twice, or three
times per second, and emitting audible beeps.
4. Press ON/OFF within two seconds to change the setting. Continue pressing the button until the
desired setting is reached. If the button is not pressed within five seconds, the Back-UPS will
exit the Program Mode.
LED
Flashing
Audible
Indicator
Transfer
Vol ta ge
Setting
Input
Vol ta ge
Range
No-load
Shutdown Description
Once per
second
None Low 78-150 Disabled The Back-UPS will switch to battery power less often. Use
this setting for equipment that is not sensitive to low or
high level voltage levels or minor voltage waveform
distortions.
Once per
second
4 beeps
per
second
Low 78-150 Enabled The Back-UPS will switch to battery power less often. Use
this setting for equipment that is not sensitive to low or
high level voltage levels or minor voltage waveform
distortions.
Twice per
second
None Medium 81-147 Disabled Use when the input utility power is normal, without any
fluctuation in voltage levels.
Twice per
second
4 beeps
per
second
Medium
(factory
default)
81-147 Enabled Use when the input utility power is normal, without any
fluctuation in voltage levels.
Three
times per
second
None High 81-144 Disabled The Back-UPS will switch to battery power during any
small fluctuation in voltage. Use this setting for equipment
that is sensitive to low or high level voltage levels or minor
voltage waveform distortions.
Three
times per
second
4 beeps
per
second
High 81-144 Enabled The Back-UPS will switch to battery power during any
small fluctuation in voltage. Use this setting for equipment
that is sensitive to low or high level voltage levels or minor
voltage waveform distortions.