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The Deta 1171 Combined Optical Smoke & Heat Alarm is designed for homeowners and property managers seeking reliable, Grade D fire protection in domestic environments like hallways, living rooms, and bedrooms. Its primary benefit is the versatile multi-sensor technology that reduces false alarms, particularly in dusty settings, while offering a 10-year sealed battery backup for peace of mind. One important caveat is that while it is highly effective, the unit requires mains-power installation and professional mounting to comply with fire safety standards.
| Model Part Number | 1171 |
|---|---|
| Brand | Deta |
While the mounting is straightforward, it involves mains electrical wiring. It is recommended to have it installed by a qualified professional to ensure safety compliance.
You can interlink up to 12 Deta alarm units in a single system.
No, it features a 10-year sealed lithium battery that is designed to last the life of the unit.
The combined heat and smoke technology is suitable for many areas, but heat alarms are generally preferred in kitchens to avoid smoke-related nuisance alarms.
It is manufactured to BS EN 14604:2005/AC:2008 and BS 5446-2:2008, and holds UKCA and CE certification.
The cover protects the optical chamber from debris, dust, and paint during construction or renovation work.
Clean the alarm to remove dust or insects that may be triggering the sensor; check if the environment contains excessive steam or smoke.
Verify the wiring between units is correct and that the total count of interconnected alarms does not exceed 12 units.
Consult the manual, but often this indicates a fault or the need for a unit reset using the test button.
Installation should be performed by a competent person, ensuring the device is wired into a 220-240V AC 50Hz supply. Use the provided universal mounting base and foam gasket to create a secure, stable fit on your ceiling. During construction or painting, leave the high-visibility dust cover on to prevent debris from fouling the optical chamber. Periodically use the test/silence button to ensure the sounder is functioning correctly. The unit is compatible with the Deta 1190 Wireless Alarm Controller if you wish to add remote hush capabilities. Keep the exterior clean by wiping gently with a dry or slightly damp cloth to keep sensors unobstructed.
