The iwi groups in the partnership are He Iwi Kotahi Tatou Trust Moerewa, Whakawhiti Ora Pai Te Kao and Te Runanga o Te Rarawa.
The first alarm was installed in a Corks Rd house which Habitat for Humanity had supplied to a Whāngarei family in recent years.
Eve Whitwell, from AMI, said the insurer was proud to donate the alarms to such a good cause.
The installation was timed to pair with the message for people to check home smoke alarms twice a year, when daylight saving starts and ends.
People are also being reminded in the campaign to haven an alarm in every bedroom, living room and hallway.
There are two types of alarms - ionisation and photoelectric.
FENZ recommends people install long life photoelectric ones because they detect smouldering fires sooner, and work for up to 10 years before going flat.
Although more expensive, they don't require replacement batteries.