Features 1. Adapt to USB interface devices, support USB communication function 2. Support remote control, timer control 3. DC5V Instructions for use: APP download and installation: Search for "Tuya Smart" APP in Android/IOS App Store and install: Open APP, register Tuya account and log in Device network registration: Press and hold the network configuration button for more than 5 seconds. When the network status indicator flashes, it means that the device is waiting for pairing and adding. At this time, the mobile phone is connected to the WiFi router (2.4GWiFi) and Bluetooth is turned on. Click the "10" button in the APP interface, select Add device, use the APP to complete the addition, and the network indicator changes from flashing to always on. The specific steps are as follows: When powered on for the first time, the green light flashes quickly, indicating waiting for pairing. Press and hold the button for more than 5 seconds to re-pair. Open Tuya Smart APP and click Add device. Enter the wifi password, and the APP will automatically search for the device and perform network configuration. After successful pairing, you can control the USB power off through the mobile phone switch. When the switch is turned on, the red LED lights up. When the switch is disconnected, the red LED turns off. Color: As Shown Material: plastic Package Contents: 4 x Controller Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.