The SPCE651.100 expander extends the acre Intrusion system via X-BUS with 8 analysed zones and 2 fully programmable relay outputs. Analysed zones allow to connect inertia sensors. The zones and outputs on the expander function exactly as the zones and outputs on the SPC panel. Each zone can be configured for different zone monitoring requirements. The outputs are volt free relays that provide both NO and NC terminals allowing the greatest flexibility. The expander comes in a plastic housing with front tamper protection and features also an X-BUS status LED and on-board buzzer for easy device identification and extensive self-diagnostic capabilities.