Multi Smoke Cum Heat Detector

A multi smoke cum heat detector, also called a multi-sensor detector or multi-detector, puts an optical smoke detector and one heat detector in a single low-profile housing. The electronics read both signals, often with the speed at which each is rising, and decide whether together they point to a fire.

Different fires give different signs. Burning cables, plastics and foam give off a lot of smoke and little heat at first, while a fast liquid fire gives off heat quickly. A multi-sensor detector can normally respond to more types of fire than a single-sensor detector.

The main reason is fewer nuisance alarms. A puff of steam raises the smoke reading but not the temperature, so the detector can wait for the second signal before it alarms. The effect depends on the model and its settings, so it reduces false alarms but does not remove them.

It costs more than a plain optical head, so we fit it where false alarms or a late response would hurt, and use simpler detectors elsewhere:

We recommend the type room by room and look after the job end to end:

Many multi-sensor detectors are made for addressable systems, where the panel reads each sensor and each device has its own address. Some makes also supply conventional versions. Before we quote, we check your panel make and model, the loop protocol and the base type. If you are choosing a system, see our pages on addressable fire detection and conventional systems, or read about the fire alarm panel the detectors report to.

Hospital owners and hotel operators benefit most, since wards and rooms near bathrooms or pantries cause nuisance alarms with plain smoke heads. Builders and architects can specify multi-sensor heads for such rooms on the detector schedule. Commercial building owners use them near canteens, and industries in offices next to process areas, while plain smoke or heat heads remain right for the process rooms themselves. MEP consultants can specify multi-sensor heads room by room and we price the schedule. Corporates use them near pantries and cafes. Defence establishments, including Navy and Army accommodation blocks and messes, suit them where cooking and bathrooms cause nuisance alarms, and we quote within their vendor rules.

Four things set the total for a multi-sensor job:

Send these through the quote page or on WhatsApp:

Each sensor has to be proved, so testing has two steps: a smoke test with test aerosol and a heat test with a heat tester. The result goes in a logbook with the date and location. Dust on the smoke chamber is the usual cause of faults, so heads in busy corridors are cleaned on a schedule under a maintenance contract.

Essatech supplies, installs and services multi smoke cum heat detectors as part of its fire alarm system services in both cities. Hotels, hostels and hospitals in Banjara Hills, Secunderabad and Kukatpally, and in Siripuram, Dwaraka Nagar and Madhurawada, are the kind of buildings where this type is common. Contact our offices with your drawings and we will propose a layout and a quote.