PowerWalker VFD 600 APFC - Manual (Page 8)

6. Modem/Phoneline Connection
Plug incoming internet line into the “In” socket at the side panel of the UPS.
Use one more internet line cable and plug one end of the internet line cable
to the “Out” socket at the side panel of the UPS. Plug the other end of the
modem input socket as shown.
7. Circuit Breaker
When short circuit happens, the circuit breaker will pop-up and then the
UPS will shutdown automatically. After waiting for 2 minutes, please press
the circuit breaker button again and the mains (AC power) will comeback.
8. Turn On/Off
Press power switch 2 seconds to turn on the UPS.
Press power switch again to turn off the UPS.