Brand Name: CHUIBO Use: Audio / Video Players Use: Lighting Use: Cinema Projector Use: TV Use: Speaker Use: Universal Origin: Mainland China High-concerned chemical: none Wireless Communication: IR Support APP: No Certification: CE Certification: RoHS Frequency: Infrared Channel: 2 Package: Yes Model Number: HR-21N Size: 185*48*22mm Use For: TV DVD DVB VCR STB HIFI TV BOX Battery: 2*AAA(Not included) Drop test: drop from 1 meter, no damage Standard: CE/ROHS/ISO9001 Warranty: 1 Year Function: Learn code from original remote control Control distance: 10 meters Choice: yes semi_Choice: yes