1. If the camera can get power, the infrared lights should turn on in red colour when the lighting around the front part of the camera is dim and weak.
2. If people want to see the image of the camera at night when there is no light around the front part of the camera, the infrared lights on the camera should turn on in red colour. When infrared lights are on in red colour, the image of the camera turns black and white, not colourful.
Therefore, we can judge if camera powers on or turns into night mode by infrared lights.
You can use hands to cover the front of the camera. If you can see red lights, it means infrared lights turn on.