The LGRU16 is a control interface relay units provide physical alarm and tamper outputs for DVR and Alarm systems 
The LGRU16 is supplied with one LGRM8 relay module which provides 8 alarm and 8 tamper relay contacts that can be interfaced to virtually any alarm system. A further LGRM8 module can be added to increase it to 16 alarm and 16 tamper outputs. Between one and four LGRU16 relay units can be connected with a single masthead receiver to provide the maximum of 64 alarm and 64 tamper contacts.