Sonoff TX Ultimate T5-1C-86 smart touch wall switch, 1-gang, white

How many separate load circuits the switch controls independently — usually the number of keys (1, 2 or 3 groups of lights). Scene-only keys without their own relay are not counted.

How you operate it by hand: pressing a key with travel and a click, touching glass with no travel, swiping, turning a knob, or using a screen with menus.

How the panel lights up: just an on/off indicator, a soft backlight to find the keys in the dark, an indicator of the current brightness level, or decorative lighting. Adjusting or switching off the backlight is in the note if the maker describes it.

The touch panel responds with a light vibration so you know the touch registered. On mechanical keys the click does this job.

Whether the wall box needs a neutral wire. Older wiring often brings only the live wire to the switch; then pick a model that works without N.

What the visible part is made of. Glass and plastic differ in look, feel and scratch resistance; details (tempered, matte, anti-glare) are in the note.

Which wall box the switch is designed for, per its documentation. 86 × 86 mm plates fix with screws 60 mm apart, as on a round European box; check that the housing depth fits your box.

The device’s size in millimetres as the maker states it. Check that it fits the wall box, niche or shelf.

The device’s weight without packaging, per the maker.

Standards and certifications the maker lists for this model (for example CE, RoHS, Zigbee 3.0, Matter).

The wireless link or network the device uses. Wi-Fi connects straight to the router; Zigbee, Thread and Bluetooth Mesh work through a hub or gateway.

Whether the device needs a separate hub, gateway or coordinator to work in a smart home. If so, it is sold separately unless stated otherwise.

Whether the device supports the Matter standard, directly or through a bridge. Matter lets you add it to Apple Home, Google Home, Alexa and Home Assistant.

Whether the device keeps working over the local network or through a hub when the internet is down. Cloud features (remote access, voice assistants) need the internet.

How the device connects to Home Assistant: a built-in integration, a Zigbee coordinator, Matter or the maker’s cloud integration.

The maker’s app used to set up and control the device.

The microcontroller or radio module inside, per the maker (for example ESP32). For firmware such as WLED and ESPHome it determines available features and whether the device can be re-flashed.

The highest current one key's relay handles with a resistive load. For LED lamps check the separate “LED load” figure, which is usually noticeably lower.

Total LED lamp wattage per channel that the maker allows. Add up the watts of all lamps on that circuit and compare; for dimmers only dimmable lamps count. If the maker gives the figure in VA or as a total for all channels, the note says so.

Current the device handles across all channels at once. On multi-channel models the total is often lower than per-channel current × number of channels.

The supply voltage (and current, if stated) as the maker gives it. It must match your mains or adapter.

Where the device gets its power: 230 V mains, an adapter, USB, batteries or a built-in battery.

Sensors inside the panel. A proximity sensor wakes the screen as you approach; a light sensor adjusts brightness; built-in temperature and humidity sensors can be used in automations.

The housing colour of this model. Other colours in the same series are separate products.

The air temperature range the device is rated for. The lower limit matters outdoors, on balconies and in unheated rooms.

The rated relative humidity range, non-condensing.