Risco 8 Zone Input Expander 

Risco 8 Zone Input Expander model RP432EZ8, enables the expansion of the number of wired zones. Up to 3 expanders can be added to LightSYS™, up to 5 expanders to LightSYS™2 and up to 35 expanders to ProSYS™ Plus. Risco 8 Zone Input Expander is a Single Zone Expander that enables to connect any detector to RISCO system BUS.

Using the BUS connection you can ease your installation by connecting any detector in parallel connections from any point along the wiring route. In addition you can define any detector