What You’ll Need
Heat+ and/or Smoke+ alarms
Mounting base (supplied with each alarm)
Screws and wall plugs (supplied)
Drill and screwdriver
Pencil
Step ladder
The alarms are battery powered, radio-interlinked, and activate automatically when attached to the base. No mains wiring is required.
Step 1: Choose the Correct Alarm Type and Location
Smoke+ alarms should be installed in living rooms, bedrooms, hallways and landings.
Heat+ alarms should be installed in kitchens, garages, or areas prone to steam or fumes.
Always confirm the correct alarm type is being installed in the appropriate location.
Step 2: Pairing and Interlink the Alarms
The LEDs on all devices will flash rapidly red and orange
Place the devices to be paired within 30cm of each other and press Switch 2 on the PCB (Printed Circuit Board) on one of the devices. The red LED will flash on all devices, and pairing is complete when the LEDs have ceased flashing.
Confirm all alarms are successfully paired.
When one alarm activates, all linked alarms should sound.
Step 3: Test the Alarm System
Press and hold the test button on one alarm.
Confirm the local alarm sounds.
Confirm all interlinked alarms also activate.
Step 4: Positioning the Alarm on the Ceiling
Install alarms centrally on the ceiling where possible.
Keep alarms clear of walls, beams, and light fittings.
Avoid corners where dead air may prevent smoke or heat from reaching the sensor.
Step 5: Fix the Mounting Base
Hold the mounting base against the ceiling and mark the screw holes.
Drill holes and insert wall plugs if required.
Secure the mounting base using the supplied screws.
Step 6: Attach the Alarm to the Base
Align the alarm with the mounting base.
Twist the alarm clockwise until it locks into place.
The alarm will automatically power on once secured.
Step 7: Final Checks and Handover
Confirm all alarms are securely fitted.
Ensure interlinking is working correctly.
Advise occupants to test alarms regularly and keep them free from dust.
Step 8: Unpairing alarms
To unpair, turn Switch 1 to the OFF position
Whilst holding Switch 2 down, return Switch 1 to the ON position
The LEDs will flash; showing the device has been unpaired
Key Benefits of Heat+ and Smoke+ Alarms
No mains wiring required
Automatic activation when fitted
Reliable radio interlinking
Suitable alarm types for different rooms
Simple and secure installation
Source: Setting up the Heat+ and Smoke+ video from CAIR UK