- C1121-433M- C1121-433M- C1121-433M- C1121-433MWirelessWirelessWirelessWireless ModuleModuleModuleModuleUserUserUserUser GuideGuideGuideGuideV-CHIP MICROSYSTEMS Co. LtdAddress: Room 612-613, Science and Technology Service Center Building,NO.1, Qilin Road, Nanshan District, Shenzhen, GuangdongTEL:0755-88844812FAX:0755-22643680E-mail:sales@digirf.comPost Code:518052Web Site:www.digiRF.com