【High-Performance NFC Chip】Features a high-capacity 215 chip (540 bytes storage, 10,000+ read/write cycles) with built-in anti-metal layer and waterproof PVC casing – ensuring reliable performance even on metal surfaces. 【Wide Compatible】Compatible with NFC-enabled phones (iOS 13 and above, Android with NFC technology) 【Easy to Use】Tap the NFC tag with your phone to instantly activate smart devices. Lightweight and portable – stick it on walls/desks or carry it anywhere for on-the-go access.

【Work with SONOFF Sensor of RJ9】Suitable for SONOFF RJ9 sensor, like THS01 Temp & Humi Sensor,WTS01 waterproof Temp sensor, and MS01 Soil Moisture Sensor. 【Extend Distance】THS01, WTS01 can be extended to 60M, and MS01 Soil Moisture Sensor can be extended to 10M. 【RJ9 Connector】The cable connector is RJ9, supporting hot-plugging, making the connection more stable and reliable.