In the new house, there is something on the toilet that will light red once.

There is a red light on the toilet in the new house, which may be a smoke alarm. Its main function is to provide safety signals for aviation flight and avoid hitting the roof when flying at night. But if you think it might be a camera, you can check whether the red light is flashing. Generally speaking, the red light of the temperature alarm flashes at the same frequency, while the red light of the camera is always on without flashing.

If you still have questions about the specific function of the red light, I suggest you consult the property management personnel, who can provide you with detailed information and guidance.