Njoy Echo Pro Series User Manual page 6

Step 5. To maintain an optimal battery charge, leave the UPS plugged
into an AC outlet at all times.
Step 6.
Before storing the UPS for an extended period of time, turn
the unit OFF. Then cover it and store it with the batteries fully charged.
Recharge the batteries every three months to ensure good battery
capacity and long battery life. Maintaining a good battery charge will help
prevent possible damage to the unit from battery leakage.
Step 7. The UPS has one USB port and one Serial port that allows
connection and communication between the UPS and any attached
computer running the Power Master software. The UPS can control the
computer's shutdown during a power outage through the connection
while the computer can monitor the UPS and alter various programmable
parameters.
NOTE:
Only one communication port can be used at a time. The port not
in use will automatically become disabled or the serial port will be disabled if
both ports are attached.
Step 8. To avoid electric shock, turn the unit OFF and disconnect the
unit from utility power before hardwiring the UPS (in/out power cord).
The in/out power cord MUST be grounded.
4.2 Software installation guide
Install software: For optimal computer system protection, install the UPS
monitoring software from http://www.powermonitor.software/
configure UPS shutdown.
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5.1 Button operation
to fully
Operations
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Button Operation Description
Press this button to turn on UPS.
In line mode, ECO mode, or converter mode, press
ON
the "ON" button for 5 seconds to activate the battery
test.
OFF Press this button to turn off UPS.
Press this button for 5 seconds to get into setting
mode while in bypass mode, or standby mode.
In setting mode, press this button to confirm
ENTER
selection, or press this button for long time to exit
setting mode and saving changes.
Press this button to scroll up in the LCD menu.
In setting mode, press this button to display next
selection, or press this button for long time to exit
setting mode without saving changes.
ESC
Press the "ESC" button for 5 seconds to disable and
enable buzzer alarm.
Press this button to scroll down in the LCD menu.
Switch to bypass mode: When the main power is
ENTER + ESC normal, press these two buttons simultaneously for 5
seconds, then UPS will enter to bypass mode.
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