Operation• Switch On - With the UPS plugged in, press the power switch in toswitch the UPS on. The UPS will perform a self-test each time itis switched on and the buzzer will beep 2 times.• Switch Off - By depressing the power switch. UPS will keep chargingbatteries.• Backup (Beeping 1 time every 5 seconds) - When in Backup mode,the battery illuminates and the UPS emits a beeping soundevery four seconds. Press the power switch to stop the beeping.The alarm stops when the UPS returns to normal utility mode ofoperation• Low Battery (Beeping 2 times every 1 second) - In Backup mode,when the battery energy runs low, the UPS beeps rapidly untilthe UPS shuts down due to complete battery discharge.• Overload (Beeping 4 times every 2 seconds) - When the UPS isoverloaded all three LED’s turn on and the buzzer beeps every1 second. Promptly disconnect non-essential load equipmentfrom the UPS to eliminate the overload, otherwise, the UPS willshut off output power. The time for shut-down is determined bythe size of the overload• NOTE: If the UPS is working in battery mode, DO NOT turn onany additional loads such as a computer or monitor orreturn any loads from sleep mode, otherwise, the UPS mayoperate its overload or short circuit protection.12