Item Tag: 1 receiver 1 sensor
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GREENCYCLE Wireless Motion Sensor Door Chime, 1Receiver 1Sensor
When the alert system receiver receives the signal from the motion sensor detector, the LED indicator light will flash. 【4 LED Indicator for Visual Alerts】 Built-in LED indicator visually signals when sensor is triggered, with option to synchronize sound alerts, providing an extra layer of awareness.
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Wireless Motion Sensor Doorbell -Indoor 1 Receiver 1 Sensor, White
When the sensor detects moving objects in the detection area, it will promptly transmit a signal and play the alarm bell you set.