8. Regarding the relay, what is the difference between the WIFI version and the Bluetooth version? A: Built-in 100A relay, WIFI version include relay, Bluetooth version does not include relay. 4. What types of mobile phones are supported? A: Currently support Android phones and phones!. 5. How big is the shunt? A: The built-in 100A shunt does not require an external CT!. 6. Is it single-phase or three-phase? A: At present this is a single-phase electricity! 1. Are there any charges for data cloud? A: It's free!. 2. What APP is supported and where can I download it? A: Currently Tuya APP and Smart Life APP are supported, which can be downloaded in major application markets ( for Android, for IOS). 3. Does this currently support computer APP? A: The WIFI version does not support computer APP, but the Bluetooth version can support computer APP 7. Is this product a 2.4G or 5G network? A: This model is the WIFI version, supports 2.4G network, currently does not support 5G! 9. Does the product have power-off memory? A: Data has power-off memory, switch mode has no power-off memory. Once the power is turned on, the relay is closed, and the screen normally display on that the connection is not disconnected!, Weight: 0.42328754304 pounds, Manufacturer: Prterver