9
Communication Connection
Serial Connection
Please use supplied communication cable to connect to inverter and PC. Insert bundled CD into a computer and
follow on-screen instruction to install the monitoring software. For the detailed software operation, please
check user manual of software inside of CD.
Bluetooth Connection
This unit is equipped with a Bluetooth transmitter. Download “WatchPower” APP from Google Play or Google
Store. Once the APP is download, you may connect “WatchPower” APP to your inverter with the password
“123456”. The communication distance is roughly 6 ~ 7 meters.
Dry Contact Signal
There is one dry contact (3A/250VAC) available on the bottom of the display panel. It could be used to deliver
signal to external device when battery voltage reaches warning level.
Unit Status
Condition
Dry contact port:
NC & C
NO & C
Power Off
Unit is off and no output is powered.
Close
Open
Power On
Output is powered from Utility.
Close
Open
Output
is
powered
from
Battery or
Solar.
Program 01
set as SUb
or USb
Battery voltage < Low DC warning
voltage
Open
Close
Battery voltage > Setting value in
Program 13 or battery charging
reaches floating stage
Close
Open
Program 01
is set as
SbU
Battery voltage < Setting value in
Program 12
Open
Close
Battery voltage > Setting value in
Program 13 or battery charging
reaches floating stage
Close
Open
