I’m hoping someone might be able to please help me. I have a bunch of Arlec Model PC399HYA (Tuya based) switches and power plugs installed in my house. I’ve recently purchased a smart plug with power metering and also recently made the switch to Tuya Local.
Ideally I’d like to know what all the attributes are, but I’d happily settle for the Current, Current Consumption and Voltage, as per the diagram. (Pretty sure that the voltage is Value 20)
Hi , did you get anywhere with this ?
Im stuck on the exact same issue.
Bring it up in TuyaSmart and compare the values found there ?
Yes I did by installing the Tuya V2 integration.
Hi @riccid - Although it looks like you’ve got it sorted, the ID values are:
Switch: 1
Current: 18
Power:19
Voltage: 20
Current, power and voltage all need to be scaled by 0.1 to give you the correct value.
Nice work, The only one I had an issue with was 18 Current - For the “Current (Amps)” I had to scale it by 0.001 for the correct Amp reading
Interesting, my version of HA wont let me enter a scale of 0.001. It stops at 0.1
hey - incase anyone else has this issue. Type 0.001 in notepad for example, copy. Then paste into the HA scaling factor 
I’ve been battling for hours to try and get Arlec GridConnect PC399HYA and PC191HA Smart Plug-in socket with energy meter recognised by TuyaLocal today.
The plug’s switch module was discovered easily, but I could not work out the right settings to get the energy/power monitors to work. I was going down custom-code rabbit-holes that didn’t need to be touched.
In the end, it was very, very simple - Everything was configured via the GUI with no custom YAML needed.
Summary:
Configure the existing switch entity to add the following IDs:
ID 1: Switch (already exists)
ID 18: Current (A) + Scaling factor 0.001 (Bug: must copy & paste this value into the UI)
ID 19: Power (W) + Scaling factor 0.1
ID 20: Voltage (V) + Scaling factor 0.1
Assumptions:
Refer here for LocalTuya installation instructions:
Lots more detail in this thread too:
Step-by-step guide:
In Home Assistant, navigate to Settings > Devices & Services.
Open LocalTuya.
Click “Configure”.
Select “Edit a device”
Select your Arlec Grid Connect Plug from the list
Tick “Add more entities in ‘edit device’ mode”
Change the Entity Type Platform to “Sensor”
Configure Entity as follows:
ID 18: Current (A)
Scaling factor 0.001 (Bug: must copy & paste this value into the UI)
Change the Entity Type Platform to “Sensor”
Untick “Do not add any more entities”
Repeat the Configure Entity process 2x more times.
ID 19: Power (W) + Scaling factor 0.1
ID 20: Voltage (V) + Scaling factor 0.1
After the 3rd (Voltage) entity is added, leave the “Do not add any more entities” ticked
Success!
Visit your “Devices” tab, and find the plug device
The device should now show the sensor values
Which you can click on and see the graphs
Click the cog to find additional configuration.
e.g. If needed, you can increase the display resolution if you have low-current devices like LED fairy lights.
That’s it!
Hope this helps.
Also Discovered the easiest way is to type:-
.1
then left arrow to move the Cursor to between the point & the one,
then type the two extra zeros.
Arlec PC191HA’s here, Common at Bunnings in Aus.
