Only working smoke alarms save lives!

April 1st - Change your smoke alarm batteries.​

Every year on April 1, April Fools’ Day Hartec promotes the day as a reminder to regularly change smoke alarm batteries using a high-quality, long-life battery.  Additional up to date information is available at

Hartec tips!

*  We recommend the installation of a 240V mains powered photo-electric smoke alarm, as qualified electricians we would welcome the opportunity to assist if required.

*  If you have smoke alarms with a changeable battery, you need to refer to manufacturer's instructions, this may be available by typing the model number into a Google search.

*  If you have mains-powered smoke alarms, read the manufacturers instructions to check if they require back-up batteries, as above a Google search may reveal your requirements.

*  All smoke alarms have a maximum service life of ten years and need to be replaced.  Mains powered smoke alarms must be fitted by a licensed electrical contractor.

*  Smoke alarms must be clear of obstructions and not painted over, we recommend an April Fools Day Spring Clean by removing any dust from the grille areas with a soft brush attached to a vacuum cleaner.


How to change your smoke detector battery.

Smoke detectors may be either battery powered or wired directly into your home's electrical system.  But nearly all smoke detectors do contain a batty, including those running on mains power.

If you hear a chirping or beeping this will be your low-battery alarm, do not ignore it; change the battery immediately.

1.  Remove the cover on your detector, gently pry or unclip the cover from the body of the detector from its base with a slight twisting motion.

2.  Replace the battery - remove the old battery from the holder, most batteries require a 9 volt battery as a replacement, insert the new battery being sure to marry up the male and female terminals correctly.

3.  Close the cover and return the detector back into its base.

4.  Test the detector - press the test button on the surface of the detector to make sure the battery is working, when the button is pressed the detector should chirp or beep.


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