Verified compatibility
We test every device for these ecosystems. For non-standard integrations contact us before ordering.
- Home Assistant
- Zigbee
- Matter
- KNX
- Wi-Fi

The WSM16-W1 is a single-channel relay module that fits the back-box behind a switch you already have: the wall key stays put, while the light gains app and voice control with no visible smart socket. The acrylic housing weighs 80 g and, being mini, fits roughly 95% of wall boxes.<br><br>It connects straight over 2.4 GHz Wi-Fi to the Tuya Smart / Smart Life app, so no separate gateway is needed. Power is AC 100–240 V (or DC 24–32 V), wired with neutral, from the WSM16/ZWSM16 family, with a 5 A official rated current. The app gives you a timer, schedules, countdown and Family Share, while voice works through Alexa, Google Home and Yandex Alice.
CasaSmart essentials
We test every device for these ecosystems. For non-standard integrations contact us before ordering.
What you need on your side and what we deliver.
Three typical automations we set up after the install.
In a Chișinău flat where neutral reaches the box, the WSM16-W1 hides behind the key and adds app and voice control by joining Wi-Fi on its own — no gateway to buy.
In the Tuya app you set a schedule: the hallway light comes on at a fixed evening hour and switches off automatically at night, with a countdown for when you leave in a hurry.
For a floor lamp or a ceiling light you ask Alexa, Google Home or Yandex Alice to switch it on, without changing the switch on the wall.
Same ecosystem
Devices that run in the same smart-home ecosystem.
Same category
Close models and alternatives from the CasaSmart catalog.

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Manager guidance
A CasaSmart manager calls you within 1–2 working hours and answers anything — compatibility, install, alternatives.
+373 60 944 922