before using equipment: Your smartphone or tablet is connected to 2.4g WiFi with internet. You need to turn on the phone bluetooth. You have the correct WiFi PWD. Your smartphone or tablet must have access to the / play. Your router is open user guide: You can search for "Tuya Smart" in the mobile to download the app. Register for a Tuya Smart Account. If you have a Tuya Smart account. Just log in. Input voltage:AC 85V-250V/USB 5V Maximum current:2000W/10A/group. Maximum load:3500W/164/40ang Wireless:Wi-Fi 2,4ghz b/g+Bluetooth. Radio frequency:433Mhz. Working temperature:-20°C-70°C add device Reset the device first: If light (red light) is blinking , skip the reset step. If not, power on, and hold the Reset button for 5 seconds. until the light blinks . Click the + sign in the upper right corner of the Tuya Smart APP. Then click on "Automatic Scan", wait a few seconds, when the device is found, click on "Next" Select a 2.4GHz Wi-Fi network and enter your password. name your device