Unlike traditional devices that detect smoke levels, Lumkani measures the rate of temperature increase to identify potential fires. The detectors are interconnected in a transmission network, and if a signal is not disarmed within 30 seconds, neighbouring devices are activated, and relevant authorities are notified. This facilitates swifter intervention before the fire becomes uncontrollable. Users pay a monthly fee for the detector and fire insurance, and they can also add funeral cover.

By providing low-cost fire detection and early warning systems in urban informal settlements, Lumkani helps to prevent the spread of fires and can save lives and property that might otherwise be lost. This is particularly important in low income areas, where a lack of access to insurance makes residents highly vulnerable to losing everything in fires.