JINK Smart Door Lock J21
JINK J21 — slim aluminum sliding-door lock





Product specifications
| Product dimensions | 357 × 41 × 55 mm |
|---|---|
| Recommended door | Narrow-stile aluminum sliding door |
| Power | 6 V (4 × AA batteries) |
| Smart protocol | Matter over Thread; a compatible Thread Border Router and Matter Controller are required |
| Body type | Match the sliding-door body, keeper and supplied drawing |
Before installation
Door thickness: 35–55 mm. Match the sliding-door lock body, frame keeper and supplied cut-out drawing. Check tracks, travel and clearance where the leaves overlap. Share door photos and lock-body dimensions with JINK before installation.
Matter over Thread
Use a compatible Matter Controller and Thread Border Router. Available controls depend on the selected platform, firmware and lock configuration. The platform links below are official introductions; they do not imply support for every platform feature.
Matter · Apple Home · Google Home · Amazon Alexa · Samsung SmartThings
Downloads and support
Complete English long image · JINK J21 user guide · V3 · Complete English product kit
For fitting and setup support, contact JINK with your model and configuration.