... , window,fireplace, security alarm system 3.Factory sell RF Remote SystemProducts Name4 Bottons Remote ControllerModel NoRFU28TypeWirelessFrequency303.875, 315, 433.92Mhz, 2.4GBOperating ... /T, L/CPortshenzhenCertificationISO9001, 14001CertificationRohs, CE, FCCFunctioncontrol roller curtain ,garage door, remote sensing ,fire place and wireless security alarm industriesAdvantages of Shenzhen C ...