FUNCTIONAL TEST MEANS OF LIGHT SCATTERING TYPE SMOKE DETECTOR

摘要

The test means is equipped with an optical arrangement for smoke detection comprising a light emitting element for smoke detection and a photoelectric element for smoke detection located at such a position that it does not receive the light directly from the light emitting element. The opitcal arrangement for testing comprises a light emitting element for testing and a photoelectric element for testing which directly receives the light from the light emitting element for testing.