Shinwa Sokutei Substrate Sensor Home 79151

It can detect the invisible substrate behind the wall. It is useful when installing curtain rails, shelves, picture frames, handrails, earthquake-resistant brackets, etc. (Measurable wall thickness: approx. 19mm) Detects metal, wood, and plastic behind walls and notifies you with a light and an electronic sound. Detectable substrates: wood and metal *Cannot distinguish between wood and metal If the wall is thicker than 19 mm, if you want to determine whether the substrate is metal or not, or if you want to detect the center of the substrate in one shot, please consider a higher-end model. Usable wall materials: plywood, gypsum board, reinforced gypsum board (*Cannot be used on exterior walls or in bathrooms) The included battery is a monitor battery for testing operation, so please prepare a new battery before use. (Power supply: 1 x 9V alkaline battery *Please remove the vinyl covering before use) An arrow-shaped light and buzzer will alert you to invisible studs behind the wall.