Established in 1924, Febco originally manufactured backflow preventers, automatic sprinkler systems and flow control products.

Hello, anyone has a sample of Tasmota-supported WiFi Thermostat Socket with external thermal sensor, something like SimPal-TY130 or similar? https://www.simpal.cn/products/41-TY130%20Tuya%20WiFi%20Socket.html

wattslf0093"

On a second thought, probably that will be enough. I'll just push VBAT voltage values over MQTT and display the gauge in IOT MQTT or some other UI. Important thing I need to organize alarm somehow if the voltage is close to 3.2 V. Push notification will suit but I don't know if IOT MQTT allows me to do it.

I know there is Shelly Plus Plug S but I suppose it's internal thermal sensor doesn't quite suit for thermostat control (meaning the device will heat itself): https://templates.blakadder.com/shelly_plus_plug_S.html

First time I see such kind of device, generally devices that support external sensors are DIN mountable (Sonoff THD) or Shellys with their add-on.

Pressure Reducing Valve

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Devices with power measurment are different. Because the power measurment has to be done on the mains side, the ESP must be in direct contact with the part of the circuit which perform the measurment. Which means that the ESP is connected to the mains. Normally this is not a problem as long as the original enclosure remains closed an no-one tries to hack into. But if you connect a sensor to the ES through wires going out of the enclose, then your sensor is also connected to the mains. 🔥

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If you know the average discharge rate and range, and when last full charge was, the calculation to get an estimate of mAh spent and left is reasonably simple, and any deviation found when it gets low could be factored into the calculations.

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but it doesn't emphasize Power Metering devices peculiarities, whereas the usual way to power up for many is to exactly CONNECT DEVICES TO MAINS AC POWER (BTW, how to solve it in this case?)

wattslf0092-1/2

The other thing to make sure if cutoff battery below 3.2 V is implemented somewhere on the board or in battery's controller itself.

Yes, understand that, but as you mentioned yourself, that voltage alone won't give me a clue about the full gauge. So I expect maybe there is some algorithm to deduce it or something that Tasmota could support for such boards.

Can a WattsLF009be installed vertically

Alternatively if you are good at hacking you could get a Sonoff S26(R2) that are quite easy to open and should be able to find a connection inside on a free GPIO for a DS18x20 probe If you go that way, beware not to choose a model which includes Power Monitoring as those plugs have hte ESP directly connected to the mains without isolation. The S26 doesn't have power monitoring so it qualify for such hack.

Watts LF009M2QT

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Watts lf009m3qt

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I found a video which sheds some light to the problem of hacking Sonoff POW devices (still, to some extent for me): "#99 Measuring Power, hacked Sonoff POW, MQTT, Adafruit.io and Home Automation" https://youtu.be/hv_FpBqWFrg?si=4vCq67_bJ_IWjiov

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Watts series LF009 with NRS gate valves materials: fused epoxy-coated cast iron body; plastic seats; relief valve with SS seat and trim; and lead-free bronze test cock.

But with a Shelly Plus Plug which is using an ESP32, you shuld be able to use BLE directly on the Plug, so you could "pair" a BLE sensor with the Plug without the need of any additional infrastructure. Still the plug could report to MQTT Temp, humiduty and battery level

Still, in my understanding if the wires to the sensor are properly isolated and the sensor with it's PCB are enclosed in case which doesn't fall apart upon falling on the floor, such hack could be considered relatively safe? If you know what your are doing, of course.

As that specific board does have that voltage divider for a safe voltage range, instead of direct battery connection, you should get an analog value on IO3 which is half the battery voltage (the voltage divider has same resistance on both sides). You may have to solder the VBAT "arrow" for connection.

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Watts

Watts series LF009 with NRS gate valves materials: fused epoxy-coated cast iron body; plastic seats; relief valve with SS seat and trim; and lead-free bronze test cock.

Still, it seems to me we should document it somewhere more clearly, maybe on the dev's Wiki pages? https://templates.blakadder.com/sonoff_POWR320D.html Or, if that applies to all the Power Metering devices - in the Hardware Preparation~ section? It already has some precaution:

For Bluetooth support, you need a binary including this feature. I'm seeing LYWSD03 temperatures using precompiled tasmota32-bluetooth.bin.

I dare to doubt that the tiny transformer of the S26 and similar devices really maintains a series separation while maintaining all insulation distances. Creepage distances, safety distances etc. must be maintained in the transformer. I would not recommend anyone to rely on this. The manufacturer does not normally give a guarantee for mains isolation.

Or simpler: Assuming stable power draw, you could make one full run until discharged, and collect readings and how long time. If your result is that it can last 5 days, and "now" is 3 days since last full charge, it follows that a reasonable estimate is 2 days more, or a bit less as a safety margin. And using the voltages, you should have a good indication of when it was fully charged.

It is not safe with thin wires if there is any risk of seeing mains power on those wires. The image you show does not count as "pretty isolated", just flimsy thin wires without much isolation. Just do not connect anything to the inside of energy monitoring devices.