You can use the sticky sensor behind the ear up to 3 times. Do not use each SmartSleep sensor more than 3 nights because it could affect device performance. The SmartSleep Sensor (behind the ear) is considered a disposable component and should be replaced every 3 nights.
You can order the sensors from our online shop
The gel in the middle of the SmartSleep Sensor is very important to its function. If the gel becomes dislodged, discard the sensor and use a new one.