1. First download the sofa butler, and then refer to this tutorial, remove the suffix name (.apk) of the downloaded sofa butler file, and then save it to the U disk; the right file of the original file is renamed to remove the .apk. 2. Insert U disk into Hisense LED65E7CY any USB interface, open the box for easy use; 3. After you enter the poly, you can reach the bottom and find the "U disk assistant" in the tool column. 5. Find the sofa housekeeper saved in advance to the U disk, select Open;
Educational projectors are mainly aimed at classroom teaching by school teachers; traditional projectors are not easy to carry. Due to the naughty students in school classrooms, projectors are not safe to place in classrooms and are easily damaged by students. The portability of educational micro-projectors makes up for teaching Vacancy, it is convenient for teachers to give lectures and only need to store the materials in the projector and show them to students for teaching, saving the trouble of textbooks and handwriting with pens and chalks. Its general weight will not exceed 0.2Kg, and some do not even need fan cooling or ultra-small silent fan cooling.
Educational projectors need to have:
1. Clear handwriting Educational projectors most often display text and images, at least a resolution of 1024*768 or more, and a contrast ratio of more than 3000 lumens, so that students in the back row can see the projection clearly
2. Short-focus large screen;
3. Accurate color;
4. Easy operation;
5. Features such as multiple connection methods.
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[Installation process]
1 Download the sofa butler to install the file to the U disk → 2 enter the use of search U disk assistant → 3U disk management to open the installation file → 4 to complete the installation
ã€Steps】 
Hisense LED65E7CY installs third-party applications via USB stick
Hisense LED65E7CY all models are equipped with an Android operating system, Android operating system can be more convenient to install third-party applications. The following installation methods apply to all Hisense smart TVs.
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.
4. Select all files;
If the installation fails, restart the device and try again by following the steps (may be useful). Still have questions please add the following sofa butler official QQ group.
Watch on-demand video on smart TVs, recommend using a TV cat, watching live TV, and recommending live HDP; more interesting content, please use Tencent video TV version, Youku video TV version, etc. Fun smart TV and box, more exciting Content is on the sofa butler.