With IPHost Network Monitor you can run WMI Power State monitoring of various devices in your network.
To create a WMI monitor for Power State, provide host name (it must be a Windows host) and specify custom WQL query:
Indicates the current power state of the computer system and its associated operating system. Regarding the power saving states, these are defined as follows: Value 4 (Unknown) indicates that the system is known to be in a power save mode, but its exact status in this mode is unknown; 2 (Low Power Mode) indicates that the system is in a power save state but still functioning, and may exhibit degraded performance; 3 (Standby) describes that the system is not functioning but could be brought to full power 'quickly'; and value 7 (Warning) indicates that the computerSystem is in a warning state, though also in a power save mode.
The Win32_ComputerSystem class represents a computer system operating in a Win32 environment.
IPHost Network Monitor is an advanced and easy tool for monitoring LAN and WAN networks, network servers, workstations and TCP/IP devices. Use IPHost Network Monitor to monitor your servers, domains, computers and devices.