DIY. Smart and good-looking.Wireless burglar alarm system with telephone alarm function DESCRIPTION:DIY, Wireless installation, Easy-to-operated.International ... , external siren: 110~120 dB6. One control panel with one telephone line and internal siren: working voltage:9 DCV, 300mA.7. two ... magnetic door sensor,one PIR detector, two remote controllers, one telephone line, one adaptor, one instruction