Equipped with ergonomically designed elastic headband Zoomable Headlamp,Intelligent Led Headlamp,Light Sensing Headlamp,Outdoor Led Headlight Ningbo Wason Lighting Technology Co.,Ltd , https://www.wasonlight.com
Installation process 1 Download the sofa butler installation file to U disk → 2U disk to Optoma HD200D → 3 multimedia management Open U disk file for installation → 4 Installation is complete
Steps 
Optoma HD200D main interface 
Prompt detected external device 
Enter the udisk0 option 
Finding the installation file 
Press remote to confirm 
The installation is complete
3. If the prompt to find the installation file does not appear automatically, we can also open the USB flash drive via "Application" → "Multimedia Play"; 
4, "Application" → "Multimedia Play" 
5, open the mobile storage device USB_DISK0 
6, Optoma HD200D complete the installation 
If you still can not read the U disk, it is recommended to format it on the computer (if there are other contents in the U disk, first export and then format) or try another U disk.
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 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.
Made in USA or Imported
[HIGH PERFORMANCE - ULTRA BRIGHT]-- Led Headlamp flashlight using CREE XMLT6 LED bulbs, CREE chips provide bright vision for you. Up to 12000 lumens to give you the brightest illumination, durable, long lasting, life time 100,000 hours.
[RECHARGEABLE & LONG LASTING]-- CREE LED headlamp powered by 2*rechargeable 18650 Lithium Ion batteries and charges via usb charging cable, after being fully charged, it can continuously last 4-5 hours, convenient and environmentally friendly.
[COMFORTABLE AND ADJUSTABLE ]-- Headlamp with its 120° tiltable angle so that you can adjust the brightness zone as you want. It is equipped with breathable elastic band and for easy adjustment, not sliding, which makes it comfortable for both adults and children.
[4 WORKING MODES]-- Lamps have 3 levels of white light brightness and strobe modes. Normal brightness mode-1 T6 LED light up, power saving mode-2 XPE LED lights up, bright mode-3 LED lights up, SOS strobe -3 LED lights blinks. Red warning light on the back of the headtorch plays a warning role.
[ALL-WEATHER READY]-- IPX4 water resistant, the air-tight rubber sealing protects the headlamp battery from dust and water. Headlamp comes in aluminum and up-to-date plastic materials and has high hardness and is not afraid of falling. Makes it applicable to more outdoor scenarios: running, camping, hiking and other outdoor activities or indoor work needs.
How to use Optoma HD200D to install a sofa butler on a U disk, and other models of Optoma HD200D can also refer to this tutorial. 2, then connect the U disk to Optoma HD200D, will pop up to find U disk tips, select "All";
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.