A method for testing smoke sensor and a smoke sensor having a function of executing the test

摘要

A method for testing smoke sensor is to set a predetermined level for alarm generation on the basis of an information on a first output of a main light receiving element (SPD) for a stray light caused by an emitted light from a main light emitting element (LED), a second output of an auxiliary light receiving element for the emitted light directly received from the main light emitting element and a composite output of the first and second outputs whereby tests for confirming normal operation and the like of the smoke detector can be executed with a high precision.