1.1本安全规范规定了设备的要求，旨在解决五岁及以下儿童从窗户意外跌落造成的伤亡风险。 1.2本安全规范仅适用于用于非逃生（出口）和救援（入口）窗户上的防坠落装置。 注1 临时安全规范PS120规定了用于紧急逃生和救援的窗户以及本标准未涵盖的任何其他窗户的防坠落装置（可释放）。 1.3本安全规范仅适用于安装在多户住宅楼地面以上75英尺（23米）高度的窗户上的装置。 本安全规范不适用于75英尺（23米）以下的窗户，因为75英尺（23米）以下的所有可操作窗户均可作为可能的二次逃生方式。 本标准无意解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全和健康实践，并确定监管限制的适用性。 1.4以英寸-磅为单位的数值应视为标准值。括号中给出的SI值仅供参考。

1.1 This safety specification establishes requirements for devices intended to address the risk of injury and death associated with accidental falls from windows by children five years old and younger. 1.2 This safety specification applies only to window fall prevention devices that are to be used on windows that are not intended for escape (egress) and rescue (ingress). Note 1 Provisional Safety Specification PS120 addresses window fall prevention devices (releasable) for windows intended for emergency escape and rescue and any other window not covered by this standard. 1.3 This safety specification applies only to devices intended to be applied to windows installed at heights of more than 75 ft (23 m) above ground level in multiple family dwelling buildings. This safety specification is not intended to apply to windows below 75 ft (23 m) because all windows below 75 ft (23 m) that are operable could be used as a possible secondary means of escape. This standard does not purport to address all safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and to determine the applicability of regulatory limitations prior to use. 1.4 The values stated in inch-pound units are to be regarded as the standard. The SI values given in parentheses are for information only.