1. To connect a sensor to X933H, you can long press the button or put a pin into the reset hole for more than 5 seconds until you see the indicator flashes quickly, release it, and wait for the search results to be displayed on X933H. If it fails, try again. Or refer to sensor instruction manual for its connection method.
2. Please make sure that X933H is connected to the Internet.
3. The distance between X933H and the sensor should not be too far. In the case that X933H and sensor are separated by two walls, the distance cannot exceed 10 meters.
4. If the problem persists, you will need to replace the malfunctioning sensor with other sensors to determine if this issue is caused by X933H or the sensor itself.