For children we bulged a new smoke detector. After a quick search much choice in this unusual model. Only selected color, and the smoke detector was already ordered. The smoke detector itself is located in the front third of the moth. The rest is hollow. As described, the detector can be glued or screwed to the ceiling. Unfortunately, I had the attachment via screw choose because the tape does not hold on woodchip. Plugs and screws are included. However, the anchors are not suitable for hollow ceiling. For the purpose of fixing the support plate has to be solved by the smoke detector. The adhesive painting which is located on the carrier plate I have removed. But you have not. The carrier plate is designed so that the smoke detector can not be mounted in any direction on the board. Four small nose pretend like the smoke detector on the support needs to be secured. Ie, one should in the direction of the fold "look" before drilling the holes should think twice. Approximately four grid position one has to host the moth to correct something. Somewhat tricky it was to attach the smoke detector on the support plate. With a little patience it works then. Overall, a "beautiful" and striking :-) smoke detectors.