What accessories are available for Online Uninterruptible Power Supply systems?

A range of accessories can help you monitor, manage and maintain your UPS installation, like communication cards using SNMP or Modbus for remote monitoring; maintenance bypass switches that allow some systems to be serviced without interrupting the connected equipment; and power distribution units (PDUs) for distributing electricity to individual devices. Maintenance bypasses are available in wall-mounted and 19-inch rack-mounted configurations.