Patent ID: 7934411

Claim:
A test system for use with a detection system comprising a detector for detecting the presence of a gas and/or combustion product, the detector comprising a housing having at least one aperture for receiving the gas and/or combustion product therethrough, the test system comprising: a testing device for testing the detector, the testing device comprising a source of test medium, a heating means for heating the test medium in order to generate test stimulus representative of the gas or combustion product, means for supplying the test medium to the heating means from the source; and means for supplying the test stimulus to the detector, wherein the testing device is mounted in a fixed and permanent position relative to the detector even while the detector is not undergoing a test, wherein the means for supplying the test stimulus to the detector comprises a fan blower for directing the flow of the stimulus from the testing device to the detector during a test, and wherein the fan blower is capable of being switched off while the detector is operating to detect the presence of the gas or combustion product.