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Phase imbalance: the three-phase problem you only see by measuring
One phase at its limit and the other two half empty does not show on the bill. It shows in the trips. Measuring all three at once with a Pro 3EM brings it into view.
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Splitting an electricity bill on data: submetering with the Shelly Pro EM-50
Two circuits measured separately by one device, sixty days of exportable history, and a relay to act when someone goes over.
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Which Shelly energy meter to choose: all six compared
All six measure with the same accuracy, so that decides nothing. Phases, maximum current, the relay and the clamp do — in that order.
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The Shelly Pro 4PM web interface: the eight settings that matter
Input mode, output type, what it does after a power cut, and the protections. What the app will not let you change and the browser will.
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Two independent lights with a Shelly Pro 2, with the wall switch still in charge
Two genuinely separate channels, Ethernet as well as wifi, and the attached mode that keeps the lights working when the internet does not.
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One Shelly Pro 3 can run 230 V AC and 24 V DC at once
Its relays are dry contacts, so each channel can carry a different voltage. With two limits that are not negotiable: 30 V DC and 240 V AC.
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BLU Remote Control ZB with a Shelly Plus RGBW PM: what works and what does not
The buttons yes, through scenes. The brightness wheel and channel switching no, and the reason is that the RGBW PM is a Plus device.
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BLU Remote Control ZB with a Shelly Dimmer Gen3: dimming with your thumb
A physical wheel for brightness, no phone and no scenes. But there is one step nearly everyone skips, and it is the one that makes it work.
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BLU Remote Control ZB with a Shelly 2PM Gen4: blinds with no hub and no cloud
The 2PM Gen4 receives the remote itself and the button layout assigns itself. Opening and closing needs no scene at all.
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The app will not pair the BLU Wall Switch 4 when you press a button
It shows in the list but fails when you press. Three causes in order of likelihood, and the first is the battery even when it is new.