This unit is with multi functions, so for better performance please read the instructions carefully before your operation.72-MC25P0-001O P E R A T I O N M A N U A LNo.19 District, Zhongkai High-tech Development Zone, Huizhou City, Guangdong Province:Product Implementation Standard :Q/WP1034-2005Q/WP1034-2005QB/44130033952-2005QB/44130033952-2005No.:Product Standardization File No.:TCL4008-123456If you encounter any problem with your monitor, please call TCL customer service hotline 4008-123456 for assistance.nationwide MC25PCOLOR MONITORCOLOR MONITOR