1. Tuya series products do not support all devices. 2. Bluetooth is only used for network signal connection and cannot be used alone. WIFI+Bluetooth is more stable. 3. The wall switch must be kept open and the fuse must be powered on before it can be used. 4. Wifi + Bluetooth dual mode, connect to the network faster. Connect to the internet 2 times faster than Wifi only. 5. Two-way: It can support both one-way switches and two-way switches, which is more convenient and practical. The high power of 16A matches the power of most electrical appliances and is safer than 10A. The small body can be installed directly into the switch's bottom box without being placed in the ceiling, facilitating maintenance. Supports dual control: Can be used with the mechanical dual control switch to connect to. Use with and Home, Tmall Genie. Share with family members for joint control. 3 states: default on or off, or memory mode. Countdown, scheduling, and sharing functions. Input Voltage: 100-240V 50/60Hz Maximum Load Current: 16A WiFi: 2.4GHz 802.11 b/g App Name: Tuya Smart/Smart Life Due to different batches, the product's appearance, color, and printing may vary, which does not affect its use. Color: White Material: PC Size: 59x42x20mm Package Contents: 1 * Control Switch Only the above package content is included; other products are not. Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the real thing. The allowed measurement error is +/- 1-3 cm.