Shelly Plus Uni as pulse counter for kWh metering

[harryWES]

Hi there, 

As newby using  Shelly devices only recently, I have understood that the Shelly Plus Uni can be used as pulse counter. 

My DDS353 DIN rail mounted kWh meter shows the total count in LCD digids but offers also a 80 ns pulse output. 

Can the Plus Uni be used to count the pulses from this connection? Simply by direct connection of the two pins to the metr connector?

Is there a scene available to manipulate/calculate this total and show the result in the Shelly and/or Homey app?

Thank for your advise!

Regards, 

Harry Westerbeek

 

[Layer0]

i just had the same question a few days ago

it is in german, but this page or your browser can translate it surely

the pic as it is

in combination with an TCRT5000 Sensor will show you a valid way

i will use it for gas and/or water

in case your KWS meter is digital an has an Infrared-Interface u can use a non-shelly system

for example i use the tibber-pulse device

Edited November 27 by Layer0

[harryWES]

Hello Layer0, 

Thanks for your concern and effort to help me out. 

My KWS device has a two threads connection. The KWS was correct working with a ESP8266 pcb in a HA platform.

Want to switch over to Homey since it is much easier to work with.

Do you have an idea how to connect the two threads to the pins 6,7,8?

And is 5 VDC sufficient to feed the Shelly for this application?

Regards, 

Harry

[Layer0]

yes, use 5 volts for the shelly plus uni

you are sure your kwh meter sends optical pulses per W or KWH ?!

in this case you can use a KY-022 sensor

the way to wire it, will be the same as in the above mentioned picture

 

Edited November 29 by Layer0