Fire Alarm Control Panel 4 zone, 8 zone, 16 zone, 24 zone, 32 zone, Model: AH-03312 Model range from 1 to 32 zones Microprocessor-base design Long-term or temporary silencing feature Protection against voltage spikes up to 2.5KW SPECIFICATION Power: 220V AC/50Hz Battery Voltage: 24 VDC Number of heat detector connected: no limit Number of smoke detector connected: 30/zone Max. Output current: 2A