... , business store, public plaza security and so on intelligent home function. Widely used forsignal home, residential area ... :95dB, external siren: 110~120 dB6. One control panel with one telephone line and internal siren: working voltage:9 DCV, ... *41cm.Standard package: one control panel, one magnetic door sensor,one PIR detector, two remote controllers, one telephone line, one adaptor, one instruction