The mini 2 zone panel HS-CK1002 have Master panel and Slave panel. One Master panel can connect 31 Slave panel, and the Master panel could show the fire and fault of all slave panel. The slave panel can only show itself fire and fault. 2. Specifications Item No. HS-CK1002 HS-CK1004 HS-CK1008 HS-CK1016 Zones 2 4 8 16 Sound output 1 1 2 4 AC power 220VAC/50Hz 220VAC/50Hz 220VAC/50Hz 220VAC/50Hz Battery Sealed lead-acid only Total DC24V system power 3.0 amps Max current per NAC 1.25amps Max battery charging capability 18AH Cabinet weight(net/gross) 3.5/4kg w/o battery 6.0/6.6kg w/o battery 6.0/6.6kg w/o battery 6.0/6.6kg w/o battery 3. Features our Style B (Class B) Initiating Device Circuits (IDCs). One Master Panel also has two zones, each zone can connect max.25 conventional detectors. One slave Panel has two zones, each zone can connect max.25 conventional detectors. The Mater panel could show the fire and fault of all slave panel. The slave panel can only show itself fire and fault.