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The fact that smoke detectors need testing is now relatively well understood. The question is what tests are required and what should be used to accomplish them properly?

Testing requirements may be divided between those performed in the field (by specialist contractors or by fire system owners) and those accomplished in the lab or factory (by detector designers, detector manufacturers or by third party test houses).
Functional (or operational) Testing
Functional checking, with a non measured source of stimulus is required by all national standards around the world. It involves the introduction of a smoke, or simulated smoke, stimulus through the vents of a detector to the sensor.
Calibration (or sensitivity) Testing
Sensitivity testing ascertains not only whether, but at what point, the detector responds to smoke. It is a quantitative test.



Today’s challenge

Multi sensor detectors (or multi criteria detectors or combination detectors) comprise, two or more sensing technologies – usually smoke, heat and CO (though others are possible) and which may be configured to use that technology independently from the other technology(ies), or interdependently including those that enhance a given technology by utilizing another.


Multi sensor detectors may respond to a functional test from a single phenomenon (smoke . heat or CO) but a single phenomenon test is not necessarily an adequate test 'in the field' for this type of detector. Each of the detection principles present within the detector (e.g.: smoke / heat / CO) needs to be individually tested for the specific detection principle on which detection might rely.


With individual testing the time and cost implications increase. Without individual testing the individual sensors cannot be relied upon.


Today’s answer

Our current product range offers a comprehensive range of solutions for testing smoke, heat and CO. Solutions for all three are interchangeable with each other, providing a quick, reliable and economical method of testing. 

  • Smoke Detector Testing
  • Heat Detector Testing
  • CO Detector Testing

Tomorrow's Solution


After years of extensive R&D we are delighted to unveil TESTIFIRE - the world's first multi-stimulus detector tester for smoke, heat and CO detectors with optional RFID and Bluetooth report and control module.

Solo A3-001
250ml Smoke Test Gas

Solo C3-001
250ml CO Test Gas

Solo A7-001
Detector Duster

Solo A3 Smoke Detector Tester Aerosol

Famous for being 'the most thoroughly researched smoke test aerosol in the market', Solo A3 (A4) is non-flammable and is proven not to cause damage such as stress cracking to detectors. Importantly it has a very fast clearing time, saving very significant time – and money – on site.

The professional's choice for ultimate value Solo A3 (A4) is a clean synthetic aerosol that delivers particles replicating those found in real smoke to the detector under test. Provided in a 250 ml canister it is designed for use with the Solo 330 and Solo 332 dispensers.

  • UL listed and Detector Manufacturer Endorsed Formula
  • Non-flammable
  • Lowest cost per test
  • Fastest activation
  • Fast clearing time
  • Non-Toxic
  • No Phthalate Esters
  • No silicon content
  • Ozone friendly with no CFCs
  • Sensor safe – does not damage plastic casing or internal circuitry
  • Oil free formulation
  • No residue

All of No Climb’s aerosol range meets or exceeds all the relevant fire industry standards, while also conforming to the highest international standards on filling, labeling, safety and compatibility.

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