... 1. 4 buttons, 4 keys 2.Control rolling door, window,fireplace, security alarm system 3.Factory ... 2.4GBOperating VoltageDC12V(A27) battery,DC3vCode typeLearning code,rolling code,fixed codeTechnical parameterASKRemote distance50-80feetPackingBlister packing, ... , 14001CertificationRohs, CE, FCCFunctioncontrol roller curtain ,garage door, remote sensing ,fire place and wireless security alarm ...