•Mains Voltage: 110-240AC +/- 10%, 50Hz •Battery Voltage: 2x12V / 7Ah 97*42*52mm •System Voltage: 29V DC Nominal •System Voltage Ripple: 200mV MAX •Charger Size: Up To 7AH In 24 Hours •Zone Voltage: 21V DC Nominal (20-22.5V) •Sounder Alarm Outputs :2/4 zone: 2 x Available 8/16/32 zone: 4 x Available •Fault Output: 1xRELAY SELV (1AMAX) •Fire Output:1xRELAY SELV (1AMAX) Fire Bell----available •Number Of Zones: 2/4/8/16/32 •Maximum Zone Capacity:20 devices Per Zone •Sounder Activation Delay:0-18 Minutes-in 30s Min Increments •Zone End Of Line Device:4.7k Resistor •Sounder End Of Line Device:4.7k Resistor •Zone Short Circuit Protection: 100mA •Charger Short Circuit Protection: Batteries Less Than 20V •Supply: 27V +/- 1V •Dimension: 400*350*105mm