Zippy Electrical Suppliers makes it easy to protect your entire home with our smoke alarm interconnect systems. These devices are engineered to link together so that when one alarm detects smoke, all connected alarms will sound. This ensures full-home notification, critical in helping everyone evacuate safely. Our systems are available in wireless and hardwired models and are fully co... https://zippyelectricalsuppliers.com.au/product/240v-photoelectric-smoke-alarm-9v-back-up-battery-emerald-planet-vulcan/