S-Series
HAOJAI S-Series 4-Key Smart Wall Panel (White)
Brand: HAOJAI
HJMT-4B3S1D-C2
Real whole-home Apple smart living starts with this one switch. Among the world’s first Matter 1.4 certified, award-winning products — works when the internet is down, keeps data off the cloud, and is compatible with four ecosystems.
The details, clearly.
Made for
your plans.
Relay control: 1–3 channels, flexibly switchable, so ordinary lighting joins the smart system easily. Scene buttons: each can trigger automations. Proximity sensing: key indicator lights wake up as you approach. The 4-key switch supports up to 3 relay functions + 12 scene functions.
Specifications refer to the listed model. Confirm the regional variant and installation requirements before ordering.
| Model | HJMT-4B3S1D-C2 |
|---|---|
| Series / finish | S-Series · 4-key (White) |
| Communication protocol | Matter over Thread |
| Matter version | 1.4 |
| Certification | CSA official certification CSA2556AMAT46268-24 |
| Relay control | 1–3 channels, flexibly switchable |
| Functions | Up to 3 relay functions + 12 scene functions |
| Proximity sensing | Key indicator lights respond to proximity |
| Materials | Glass and FENIX high-tech nano material, 3 mm material layer |
| Compatible platforms | Apple Home / Google Home / Amazon Alexa / SmartThings |
| Pairing | NFC tap-to-pair |
| Updates | OTA |
Before you begin.
Your home platform
Use a Matter-compatible controller for your chosen smart home platform. Available controls and automations depend on platform support.
Your Thread network
This product uses Matter over Thread. A compatible Thread border router connects it to the rest of your home network.
Your installation
For mains-powered products, use a qualified installer and confirm supply, load and mounting requirements before installation.
A home, considered as a whole.