Elro RMAG3 Magnetic Attachment for Mini Smoke Detectors up to 0.6 lbs / 9.7 ounces Weight: up to 0.6 lbs.Theres no threat of drilling into cables or water pipes in the wall. The simple and fast way of mounting a smoke detector, without tools, screws or drilling! Magnetic mount for Mini Smoke Detector the smart alternative to conventional detector mounting This set for all popular smoke detector models includes a base plate and a matching counterpart. Paint the base plate any color you like and change batteries without a screwdriver in seconds.