请注意:此版本的所有临时修订版将在您购买时提供。火灾报警系统的手动信号箱SUL 381范围1。1这些要求包括根据国家电气规范NFPA 70和国家火灾报警规范NFPA 72.1.2，用于永久安装和在普通位置使用的火灾报警系统的手动信号箱。手动信号箱是一个机械装置的总成，其电气触点设计用于在手动操作整体部件时传输信号。信号触点拟连接至火灾报警系统的电路。这些要求涵盖的箱子类型包括编码箱和非编码箱，包括信号箱、消防和警卫巡更报告站以及警卫巡更报告站- 信号组合。1.3应评估手动信号箱是否符合手动信号箱和电动变送器的适用要求，手动信号箱应具有预绕信号机构，并配备跳闸电磁铁，以允许通过单独的探测器和类似的组合装置自动驱动。1.4应建造手动信号箱，以便与系统控制单元、电动发射器或类似单元一起使用，以便按照国家消防协会的适用规范和标准使用。1.5这些要求不包括电动变送器。

Please note: All interim revisions for this edition available at time of your purchase will be included.Manual Signaling Boxes for Fire Alarm SystemsUL 381 Scope1.1 These requirements cover manual signaling boxes for fire alarm systems intended for permanent installation and used in ordinary locations in accordance with the National Electrical Code, NFPA 70, and the National Fire Alarm Code, NFPA 72.1.2 A manual signaling box is an assembly of a mechanism having electrical contacts designed to transmit a signal when an integral part is operated manually. The signaling contacts are intended to be connected to circuits of fire alarm systems. The types of boxes covered by these requirements are coded boxes and non-coded boxes, including signaling boxes, fire and guard's tour reporting stations, and guard's tour reporting stations for suppressed-signal tour combinations.1.3 A manual signaling box having a pre-wound signaling mechanism and equipped with a tripping electromagnet to permit automatic actuation by separate detectors, and similar combination devices, shall be evaluated with regard to compliance with the applicable requirements for both manual signaling boxes and electrically-actuated transmitters.1.4 A manual signaling box shall be constructed for use with system-control units, electrically-actuated transmitters, or similar units that will permit its application in compliance with applicable codes and standards of the National Fire Protection Association.1.5 These requirements do not cover electrically-actuated transmitters.