Support APP:No Frequency:433 MHz Channel:3 Package:No Model Number:For Epson EB-X3 EB-S4 EB-U04 EB-W04 EB-X11 Wireless Communication:IR Use:Audio / Video Players Origin:Mainland China Certification:CE Operating method; 1. Please point the remote control to the signal receiving window of air conditioner/TV/audio/for operation. 2. Please remove the battery when it is not in use for a long time. 3. Dnot mix old and new batteries or different types of batteries 4. No Need to set up,Just direct to use after putting a New battery. 5. 90 Days Warranty, Battery and Manual are not included. About guarantee 1. all products are tested work performance is good 2. if you receive the product are not satisfied within 7 days, please replace or refund, you are responsible for shipping costs. 3. if the product is defective within 3 months, we will send you a new, provide a refund after we received the defective products. About service 1. when you receive the product satisfaction, please give your a little precious time 5 points high praise, thank you 2. if received products are not satisfied or have questions, please contact us in time, give you the most satisfactory solution. About Us We are a remote control manufacturer with 15 years of experience and have many kinds of remote control in stock. If you have more quantity requirements, please send email to us and we will give you some discounts. We are happy to establish a long-term business relationship with wholesale buyers, thank you