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你好；咨询个有关zigbee传感器问题。用zigbee3.0开发人体红外传感器，想实现两个方向的红外识别，如识别左侧进入或右侧进入，怎么用Alarm实现这个功能？文档里提到Alarm1表示Intrusion indication，Alarm2表示Presence indication。
