The i-onG2SM is a Grade 2 control panel with 10 zones on board, expandable to 50, and feature-packed to deliver you real benefits. Built with cyber security in its DNA the i-onG2SM is SecureConnectTM Cloud and App enabled Decimal expansion system Expanders have 10 zones in addition to the 10 zones on the end station. It provides 25% more zones per expander than traditional 8 zone expanders. A 30 zone radio expander is also available. Performance bus Fit up to 20 bus devices: expanders, keypads or power, supplies. Semi-auto addressing Prevents address duplication for bus mounted devices, saving hours of installation diagnostic time. Audible bus device tracing Locate any bus device quickly and easily. Reduce the time taken to complete maintenance and service calls.