Devices with power monitoring support

[Limeth]

Hello! I'd like to buy a UPS with power monitoring (in watts on the output sockets), but I can't figure out which ones support this feature. I was hoping it would be documented somewhere, but I'm not having much luck. In particular, I'm currently looking at the Eaton 5E900UF, but wasn't able to deduce from its spec sheet much of anything about the supported features in the USB communications. Any advice would be greatly appreciated, thanks!

[trallnag]

I have the Ellipse PRO 650 and it works great.

battery.charge: 100
battery.charge.low: 40
battery.runtime: 890
battery.type: PbAc
device.mfr: EATON
device.model: Ellipse PRO 650 
device.serial: P355L43NLF
device.type: ups
driver.name: usbhid-ups
driver.parameter.pollfreq: 30
driver.parameter.pollinterval: 2
driver.parameter.port: auto
driver.parameter.synchronous: auto
driver.parameter.vendorid: 0463
driver.version: 2.8.0
driver.version.data: MGE HID 1.46
driver.version.internal: 0.47
driver.version.usb: libusb-1.0.26 (API: 0x1000109)
input.frequency: 50.0
input.transfer.high: 285
input.transfer.low: 165
input.voltage: 237.0
input.voltage.extended: no
outlet.1.desc: PowerShare Outlet 1
outlet.1.id: 2
outlet.1.status: on
outlet.1.switchable: no
outlet.2.desc: PowerShare Outlet 2
outlet.2.id: 3
outlet.2.status: on
outlet.2.switchable: no
outlet.desc: Main Outlet
outlet.id: 1
outlet.switchable: no
output.frequency: 50.0
output.frequency.nominal: 50
output.voltage: 238.0
output.voltage.nominal: 230
ups.beeper.status: enabled
ups.delay.shutdown: 20
ups.delay.start: 30
ups.firmware: 01.16.0020
ups.load: 27
ups.mfr: EATON
ups.model: Ellipse PRO 650 
ups.power: 179
ups.power.nominal: 650
ups.productid: ffff
ups.realpower: 51
ups.serial: P355L43NLF
ups.status: OL
ups.timer.shutdown: -1
ups.timer.start: -1
ups.vendorid: 0463

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Edit: Not sure how good the data is. The UPS is plugged into a metering device. It currently tells me a power of 86 watt, a value I can't find in the data available from the UPS.