You can now purchase smoke alarms with ten year fixed non replaceable batteries. These alarms need to include a wifi or hard wired interconnection feature to meet Qld regulations. Aside from the safety enhancement of the interconnection, there is a reasonable probability these requirements may become universal.
The ten year built in battery option with wifi may be the only practical option for many older and exisiting homes.
Can we rely on any of the alarms available to last ten years, with some false triggering along the way. I’ll note some of us are prone to burning the toast, and when one alarm near the kitchen sounds, so will every other. Hence affecting the battery life of every alarm in the house.
Would Choice be able to test say a set of three wifi alarms, retriggiering them once every xx mins and counting how many cycles they last for. This would give a guide to relative difference between models or brands as well as a guide to which ones might last the ten years.
I’ve noted the warranty wording in some of the alarms is a little vague as to whether the battery is covered.
For the wifi interconnect, it may be wise to test the effective range as for a wifi modem and standard blocking walls. Is a greater effective range a guide to better quality?
How likely are wifi interconnected alarms to suffer interference or crosslink to a neighbours alarm?