Sliding door device and sensor unit

A sliding door device (1) is provided with: a sliding door panel (30); a drive mechanism (50) that slides the sliding door panel in the door width direction; a receiving unit (35) that is connected to a control unit (55) that controls the drive mechanism; and a detection unit (16) that is provided at the door handle position of the sliding door panel and detects a detection target. And a transmission unit (19) that wirelessly transmits a detection signal from the detection unit to the reception unit. The detection unit is provided with: a first sensor (17; and a second sensor (18) having a detection range narrower than that of the first sensor and outputting the detection signal, the second sensor operating in a detection state in which the first sensor detects the object to be detected. 推拉门装置(1)具备推拉门面板(30)、使该推拉门面板在门宽度方向上滑动的驱动机构(50)、与控制该驱动机构的控制部(55)连接的接收部(35)、设置在上述推拉门面板的门把手位置而对检测对象进行检测的检测部(16)、以及将该检测部的检测信号无线发送至上述接收部的发送部(19)，上述检测部具备：第1传感器(17；以及第2传感器(18)，检测范围比该第1传感器窄，输出上述检测信号，该第2传感器在上述第1传感器检测到检测对象的检测状态下进行工作。