Deta 1171 Combined Optical Smoke & Heat Alarm Mains with Lithium Battery Back Up
Interlinkable up to 12 optical, heat, combo and carbon monoxide alarms in total for larger properties. Hardwired linkable with Deta models 1163, 1164, 1165, 1166 and 1169. Up to 12 alarms in total for larger properties.