Clean backup power.PROVIDE BACKUP POWER An additional power source that can be used in the event of power failure. See UPS and backup.  A Half Minute of Backup This roomful of lead acid batteries stands ready to drain itself entirely in less than a minute. for sensitive electronic equipment. The ALI Plus UPS Series is a microprocessor-controlled, pure sine wave A continuous, uniform wave with a constant frequency and amplitude. See wavelength.  A Sine Wave _title> Sine wave , line-interactive UPS, with an autovoltage regulator that provides safe, clean reliable power to electronic devices. The ALI Plus Series comes in both tower and rackmount versions, and provides 600 VA to 3,000 VA of backup power. The UPS allows a widened input voltage range, decreasing the number of times the unit has to switch to batteries. This feature helps during brownout A lowering of AC power voltage for some period of time. Brownouts can be very harmful to electronic equipment if sustained for long periods. Brownouts can cause flickering or a dimming on screen, and the computer may experience intermittent problems as a result. See blackout. conditions, where power is sagging but not completely blacked out. The unit's RS-232 two-way communication Two-way communication is a form of transmission in which both parties involved transmit information. Common forms of two-way communication are:
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