ECENCE smoke detector magnetic holder, 20 pieces, self-adhesive magnetic holder for smoke detectors Ø 70mm, quick and secure installation without drilling or screwing, for all fire alarms and smoke detectors. - Installing smoke detectors and fire detectors is not only cumbersome, but can quickly become dangerous due to cables in the ceiling. Thanks to our self-adhesive magnetic attachment, you save time and enjoy maximum safety during installation. - It can be attached without tools and without drilling in just one minute. Make sure it is attached to a stable, dry, dust- and grease-free location. Universal magnetic holder for common smoke detectors with various base diameters - The back is magnetic and suitable for all common fire detectors and smoke detectors with a base diameter of at least 5 cm = 50 mm magnetic holder or 7 cm base diameter = 70 mm magnetic holder. The contact surface between the base and the adhesive surface of the magnetic attachment should be sufficiently large. Some smoke detectors and wireless smoke detectors have large recesses or uneven surfaces that can reduce the contact area. A weak connection occurs when the detector is heavy and the contact area between the adhesive pad and the base is small. The advantages of the magnetic mount at a glance: - Easy installation without tools - Extra strong adhesive surface - Simply paint over the ceiling color - For all common fire alarms and smoke detectors with a base diameter of ≥7 cm - Easy battery replacement. You will receive the smoke detector magnets in a set of 20 for a complete home installation. Scope of delivery: 20x magnetic holders for smoke detectors Ø 70 mm