25
S1
Bypass Voltage is adjusted to low range. (15% of UPS output setting)
S2
Bypass Voltage is adjusted to high range. (10% of UPS output setting)
T
Frequency Window is ±3 Hz. (±3 Hz or ±1 Hz)
U
Inverter Output Voltage (100, 110, 115, 120 or 127Vac)