User`s manual

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Voltage Sensitivity (not all UPSs support this function)
Adjust the UPS voltage sensitivity.
Transfer Voltage (not all UPSs support this function)
Changes the low voltage and high voltage transfer points. This function lets your UPS
adjust to the local power environment.
a. Low Voltage Transfer point: When the utility power voltage drops lower than the
assigned value the UPS will switch to backup mode. The output power is supplied from
the battery.
b. High Voltage Transfer point: When the utility power voltage rises higher than the
assigned value, the UPS will switch to backup mode. The output power is supplied from
the battery.
External Battery Pack (not all UPSs support this function)
The RS232 port MUST be used when configuring the UPS for External Battery Packs.
The USB port does NOT support configuring the UPS for External Battery Packs. When
using an External Battery Pack with the UPS, the UPS must be configured; to report the
correct Estimated Runtime and so that the Battery Capacity Bar Graph LEDs on the front
panel will work properly during the battery mode operation. Simply click on Configure,
UPS, and then External Battery Pack. Then select the number of External Battery Packs
that are connected to the UPS.