... ControllerModel NoRFU28TypeWirelessFrequency303.875, 315, 433.92Mhz, 2.4GBOperating VoltageDC12V(A27) battery,DC3vCode typeLearning code,rolling code,fixed codeTechnical parameterASKRemote distance50-80feetPackingBlister ... and wireless security alarm industriesAdvantages of Shenzhen C&D Electronics Co.,lTD:1. More than 1000 workers,12 Advanced production lines, production ...