liebert - Man Page

Driver for Liebert contact-closure UPS equipment

Synopsis

liebert -h

liebert -a UPS_NAME [OPTIONS]

Note

This man page only documents the hardware-specific features of the liebert driver​. For information about the core driver, see nutupsdrv(8)​.

Supported Hardware

This driver supports some Liebert UPS equipment with a contact-closure interface​. This includes the UPStation GXT2 with their contact-closure cable​.

The smart mode ("Multilink") cable is NOT supported by this driver​.

Extra Arguments

This driver does not support any extra settings in the ups.conf(5)​.

Bugs

This driver does not yet support shutdowns by raising DTR​. Be aware that shutdowns are not possible with the stock contact-closure cable​. You may have to build another cable with DTR connected through to the UPS for it to work​.

There is no way for this driver to detect the hardware or cable​. It will start up successfully even if no UPS is present​. This is a fundamental limitation of any contact-closure driver​.

See Also

The core driver

nutupsdrv(8)

Internet resources

The NUT (Network UPS Tools) home page: https://www​.networkupstools​.org/historic/v2​.8​.5/

Referenced By

nut(7), nutupsdrv(8), upsd(8).

08/25/2026 Network UPS Tools 2.8.5 NUT Manual