1. Smart Fan Switch: This is for traditional A/C ceiling fans. It has 4-level speed control without buzz noise
2. TASMOTA: pre-flashed. ESP8266 build-in. Support MQTT to link your local smart home system.
3. Installation Notice: This is only a control ceiling fan (No light switch). Single pole, 2.4G Wi-Fi ONLY (Not 5G). Please contact us for any tech problems
4. Other features include: Temperature protection, a designated wifi pairing button, fast wifi connection via Bluetooth
5. Warranty: Martin Jerry Promises a 30-Day 100% refund, 1-year Quality Warranty for its Smart Home Devices on Amazon