Clipsal smoke alarm Photoelectric, Surface Mount, 240V 9V d.c. Battery backup, Generation 2 Wired interconnect feature (up to 40 alarms) Compatible with optional relay or wireless interconnect bases Quality optical chamber with stainless steel insect screen Easy to use test/hush button Easy installation and maintenance with flip down design Robust digital design Certified to AS3786:2014 Comply with the new legislation for all states