Mine is Sonoff POW, current firmware is 2.0.2, available update is 2.0.4, but failed to update.

So I hooked up the Sonoff POW to my Panasonic refrigerator to monitor the power consumption.

https://www.panasonic.com/my/consumer/kitch...nr-by558xs.html

Setting: Fridge - Medium, Chiller - Low, Freezer - Low

Idle: 3W (mostly) to 7W
Compressor running: 65W to 66W

Updated Sonoff POW firmware version to 2.0.4 just now early morning.
Maybe connection to China server at night got throttled and hence keep dropping.

Not sure if you can view the file.
http://ewarranty.hitachiconsumer.com.my//f...0b1943b13da.pdf

Yea, even Panasonic did not state the exact value, only this statement in the spec page:

Energy Consumption: 430 kWh/year (Target)

430kWh/year = 1.178kWh/day = 49.1W/hour

Found some hacks for Sonoff, but sure if still applicable.
Possible to run on local network.

https://blog.ipsumdomus.com/sonoff-switch-c...ade-1b2d6632c01

Strange, my side can view the page.

Yes, it is a guide on how to hack the Sonoff to use local network without flashing firmware.

Are these two looks the same?
https://www.panasonic.com/my/consumer/kitch...r-f681gt-x.html
http://hitachiconsumer.com.my/products/ref.../r-e6800xm.html

This post has been edited by alexander3133: Feb 1 2018, 12:30 PM

It can work standalone even without the gateway unit.
Without the gateway unit, you just don't have smartphone notification if alarm triggered.
This smoke detector does not use WiFi to communicate with the gateway.
The gateway has a microphone to listen to smoke detector beep.

So in such a way that, if your gateway got hacked, the hacker can listen your house.

This post has been edited by alexander3133: Feb 2 2018, 08:11 AM

My bad, it uses ZigBee to communicate with the gateway.
Edited my post, sorry.

First day energy usage recorded for my fridge is around 1.158kWh.



From Panasonic spec page, mentioned 430 kWh/year or 1.178 kWh/day

From Suruhanjaya Tenaga, 394 kWh/year or 1.079 kWh/day



So looks like I am getting the power consumption that is roughly within expected range.

This post has been edited by alexander3133: Feb 2 2018, 06:32 PM

Tonight I burn something to test it out for you

Yes, come with battery, bought from Taobao.
The battery is not so common, but still able to get it in Malaysia.

How many smoke alarm you have?
Did you link your independent smoke alarms together?

Day 2 of using Sonoff POW to monitor refrigerator power consumption.

I noticed that Sonoff app now showing 0 watt when my refrigerator is in idle.

When I first saw 0 watt while at work, I was worry that some wire connection got loose after Sonoff side and hence no power goes to my refrigerator. So I quickly turn on my CCTV app to check it out, luckily the refrigerator is still on.

But how come it is showing 0 watt instead of 3 watt on 1st day?
When compressor is running, the Sonoff app now showing 64 watt, versus 66 watt or 67watt on first day.

What could be the problem? The Sonoff POW device offset by -3 watt?





Addition: Observed my refrigerator now consume as high as 126 watt after one time open fridge door for about 10 seconds.

Edit again: After idle from the high energy consumption, the idle power usage is now shown as 3W, therefore previously my refrigerator did consumed less than 1W when idle sometimes.

This post has been edited by alexander3133: Feb 2 2018, 06:40 PM

I just tested the Xiaomi Smoke alarm.
Burnt paper and let the smoke out.
Regardless of the Xiaomi gateway, the smoke alarm still works.

1st I test with Xiaomi gateway on, 2nd I tested with gateway turned off, both case the smoke alarm working fine.
Giving out very loud beep.

Just that without gateway, there will be no smartphone notification.



The English translation in Mijia app still need refinement.

This post has been edited by alexander3133: Feb 2 2018, 06:00 PM

If really got fire or smoke happened, you would want the smoke alarm to keep beeping until you get notified.


When the Xiaomi smoke alarm get triggered, it will send out loud beep, the gateway will also play emergency sound, so two devices get sounded.
That time I was testing, as long as the smoke alarm didn't detect any smoke, it will stop beeping after a while.
You can stop the gateway emergency sound by pressing the button on the gateway.

The little button on the smoke alarm is to test the smoke alarm if it is working with the gateway.

I suspect the wiring is like this.

My house have the same wiring.

Yes, my developer also did the same.
You just have to find out which wire is for which, then label it.
I use multimeter to identify which two wires goes out to the door bell switch, then only I install the doorbell.

So you want wireless doorbell or what?

So you going to replace the existing door bell push switch with a blank plate and then stick this wireless button on top of the blank plate?