The performance of single iron core
The resistance DC component single magnetic core is a single resistance DC magnetic core, which has the characteristics of high linearity, high precision, easy phase error compensation and good high and low temperature characteristics. At the same time, compared with the composite core, the single iron core has stronger stability and smaller volume.
The application of CT core
Our iron core has high permeability,low coercivity and loss,excellent performance on DC resistance and temperature stability that can be widely used to the single-phase electrical meter trandformer.
Resistant DC Core For CT,Coating Iron Core For CT,Withstand Voltage Iron Core,Gapped Toroidal Core Anyang Kayo Amorphous Technology Co.,Ltd. , https://www.kayoamotech.com
Installation process 1 Download the sofa butler installation file to U disk → 2U disk Insert the smart TV/box USB interface → 3 Smart TV/box application interface Find the installation file to install
Steps 
Some TV boxes and smart TVs will directly prompt to open the U disk, find the sofa butler APK installation package, follow the prompts to install;
For devices that do not automatically prompt, open the USB drive using the file management, local installation, or other file browser (such as the ES file browser) that comes with the system. 
Shadowbox how to install a sofa butler through a U disk. Other models can also refer to this tutorial. 2. Connect the U disk to the USB port of the smart TV/TV box.
1. Baidu search for "sofa manager" into the sofa network, download the sofa butler package; or directly click the link (http://app.shafa.com/shafa.apk) to download the sofa butler package.
Copy the downloaded apk installation package to the U disk.
If you still cannot read the USB flash drive, you are advised to format the USB flash drive in FAT32 format first (if there is any other content in the USB flash drive, export it and then format it) or try another USB flash drive.
If the installation fails, restart the device and try again by following the steps. Still have questions please add the following sofa butler official QQ group.
Watch on-demand video on smart TV, recommend using pudding video; Watch live TV, recommend HDP live broadcast; More interesting content, please use Tencent video TV version, TV; Fun smart TV and box, more exciting content in Sofa net.