| 摘要 |
The audible and/or optical detectors (5,6) output an acoustic and/or visual alarm (AA,OA) in the detected event of fire. Independent electrical supply of fire detector is provided by a battery (4) whose voltage is measured by a voltage measuring unit. Acoustic warning (AW) is transmitted as output when battery voltage is below voltage limit (Ulow). The output of acoustic warning is transmitted if the ambient light brightness is below limit value (HG). The detection unit is an open scattered light detecting unit with an exterior fire alarm detection chamber (DR). |
