$13.86reference price
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Adding automation to wiring you already have inside a box or panel, or to Matter hubs (Apple Home, Google Home) without depending on a closed app.
This device is a "remote switch" that installs hidden inside an electrical box or panel, not a plug you see and touch. It has what's called a "dry contact": think of it as a robot finger that presses or releases a button for you, regardless of what current is on the other side of that button. That makes it compatible with almost any existing installation, not just plug-in appliances.
You have a garden light wired the traditional way (with its own wall switch) and want to turn it on with your voice or phone without redoing all the wiring — this switch installs inside the switch box and does that job.
A workshop wants to automate a fan or compressor that's already hard-wired, without buying a new motor — the dry contact acts as a robotic button for that existing equipment.
Compared to a generic smart plug that only works for what you plug into it, this switch lets you automate wiring that already exists in your home or workshop — it's more work to install, but far more versatile, and Matter support keeps you from being locked into a single app forever.
SONOFF WiFi MINI-D Smart Switch — Dry Contact, Matter Compatible
$13.86reference price
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It's a ready-to-use outlet (not a module for a panel), meant for anyone who wants immediate results without wiring anything. It runs on the closed GHome/Tuya ecosystem — no dry-contact output or native Home Assistant integration without an extra bridge. A good choice if simplicity is your priority, not if you're looking to integrate it into your own Node-RED project.
Real-time power monitoring (watts) is the differentiator over a simple plug — useful for consumption-based automations, like turning off a device when a cycle finishes. It's made by AiSeek: a real 1800W/15A rating with built-in short-circuit and overload protection, ETL and FCC certified, but 2.4GHz WiFi only (no 5GHz). The 4-pack makes it convenient to equip several points at once, but you're still dependent on the SmartLife app (Tuya-based) to configure them — and it doesn't pair directly with Alexa: you first connect it to SmartLife and link it from there as a third-party service to Alexa or Google Assistant.
A ready-to-use smart plug, no panel installation needed — you plug it in and control it from an app. Works with Alexa and Google Home, but you need to link it to the GHome app first (it doesn't connect directly to the assistants). Only supports 2.4GHz WiFi (not 5GHz) and has no dry-contact output like the SONOFF already in this ranking, so it can't switch an external load inside a panel — it's for plugging in appliances directly.