That's the message from Kiama Fire Station to the community, particularly seniors, ahead of this Sunday.

Fire and Rescue NSW (FRNSW) firefighters from Kiama are urging seniors in the community to change their smoke alarm batteries when they change their clocks for Daylight Saving on April 6.

As part of the "change your clock, change your smoke alarm battery" campaign, firefighters encourage those most at risk in the Kiama community - those aged over 65 - to contact the fire station if they need help changing their smoke alarm battery.

FRNSW is also working in partnership with Home Care Service of NSW to identify those in need of assistance with their smoke alarm batteries.

"If you cannot climb a ladder and have no family, friends or neighbours to help you, we will come out and replace seniors' smoke alarm batteries free of charge as part of the Smoke Alarm and Battery Replacement (SABRE) program," Kiama Fire Station captain Peter Mitchell said.

"It's better to replace a battery than potentially have to drag someone out of a fire."

Mr Mitchell said this initiative was even more important given Kiama's ageing population.

"A fifth of all house fires involve seniors.

"The most important thing those over 65 can do to reduce their risk of fires in the home is to have a working smoke alarm.

"A fire can take hold in just three minutes, filling your home with deadly smoke.

"A working smoke alarm gives you vital seconds to get out before you're overcome."

Mr Mitchell said they recently had funds donated by Kiama Lions Club, which the station had used to buy about 50 standard smoke alarms.

The alarms were primarily intended for the elderly and any incapacitated people. Mr Mitchell said they had installed about 10 of them.

Phone the station on 4232 1222 for details.