•Zone numbers:1,2,4,8 zones •AC input:220 VAC •Battery type:2 x 12 V/1.3Ah •Maximum number of smoke detector/heat detector per zone:20pcs •End of line resister:6.8k •Siren output: Available •Max output current:0.5mA •Dimension: 275x 200x 75mm •Body material: Iron •Operating temp.: -10℃~+50℃ •Operating humidity: ≤95 RH •Weight(without battery):2.3Kg