Precise Power Plug Zigbee

Hardware Home Automation
1

Hi,
i use NOUS A1Z zigbee power plug in oH and i am happy, but i noticed, that the plug cant measure devices which are in standby and used e.g. 0.4Watt. Now i am looking for another zigbee power plug which is precise and can measure power consumption in standby.

What can you recommend?
thx
Taste

2

I believe your NOUS A1Z is a Tuya-based device, and I doubt any of them register standby current. My WiFi Tuya plugs don’t either, but I’m in North America. So at the very least, I’d suggest looking for a non-Tuya device.

3

Hi not sure but if you are in the US .
I use these and they work great and measure down to the milliwatt
sengled brand ZigBee and easy setup also act a a hub extender as an extra bonus.
https://www.amazon.com/gp/product/B092DBFFBY/ref=ppx_yo_dt_b_asin_title_o07_s00?ie=UTF8&th=1

4

I just looked up the NOUS A1Z to determine that they aren’t in North America.

5

I cant confirm that. I measure a intel nuc in standby with tp link wifi power plug and it shows e.g. 0.6 watt. The NOUS shows zero and so i think they not as accurate as the tp link hs110. later i switchted to tapo p115 and they show also 0.6 watt in standby.

6

Does that behavior also reflect using the NOUS app when you view it or only when you view via openhab?
It may be a case of rounding and or average if you are looking at the instantaneous versus a running total channel.
Not sure what else to tell you since the device you listed is a European For all my devices, I use here in the US they all measure down to the milliwatt both Wi-Fi shelly or any of my Zigbee devices that have power management channels.

7

Hi,
until now, i didnt know that there is a NOUS app :). I use zigbee2mqtt and oh and both show the same standby value, zero.

8

Perhaps reach out to vendor see if there is a firmware update maybe?
Perhaps your device is defective for the measuring section?
Do you have more than 1 of these devices?
If so, do they all have the same issue?
Also, I would find it very unusual for them to not register a value greater than a half watt seems kind of useless to not be able to capture all of the power consumption if your purpose of adding power monitoring as a feature and advertising your device’s ability’s/benefits is around power usage monitoring such as what this vendor seems to have pasted all over their site.
I did find them on amazon.AU and not one single comment in all the reviews mentioned a lack of accuracy for power monitoring and I translated a bunch of them just to see if other folks had also reported that issue. So, it does not seem to be a widespread known issue with the product this would lead me at least to think perhaps your device is damaged or defective for that feature.

9

I hope you mean a device plugged into this NOUS and is in standby and not the actual NOUS plug in off or in standby mode.
Because even the plug/NOUS device itself will have some amount of parasitic draw in order to run the transceiver and other electronics that are needed to manage it.