Poor contact of the automatic iris camera control line, etc., resulting in not opening

Check the wiring.

2. The aperture of the dome camera is set to closed or the manual exposure brightness is too low to be completely black

Adjust the aperture mode or exposure brightness.

3. The lens cap of the dome camera is not removed

The lid can be removed.

4. Abnormal power supply causes the aperture to freeze

Check whether the power supply of the device is normal?

5. The camera is abnormal

Please contact after-sales service for maintenance.