18|EnglishToswitch onthe measuring tool, press either the on/off button(8)or the red startbutton(16).Toswitch offthe measuring tool, press the on/off button(8)again.If no button on the measuring tool is pressed for approx.5minutes and the measuringtool is not moved, the measuring tool will automatically switch itself off to preserve bat-tery life. You can change the switch-off time in the main menu(see "Main Menu",page27).Overview of the measuring modesThe measuring tool has the following measuring modes:–: For detecting objects in walls, floors and ceilings,–: For detecting leaks,–: For measuring distances.You can change the measuring mode in the main menu(see "Main Menu", page27).Measuring ModeHow it WorksThe measuring tool checks the substrate of the sensor area. Objects that are differentfrom the material of the wall are detected.If multiple objects are located over each other in the wall, the display will indicate the ob-ject whose surface is nearest to the measuring tool.Detectable objects–Plastic pipes (e.g. water-filled plastic pipes, such as underfloor or wall heating pipes,etc. with a diameter of at least 10 mm, or empty pipes with a diameter of at least20 mm in solid surrounding material)–Electrical cables (regardless of whether live or not)–Three-phase power cables (e.g. to oven)–Low-voltage cables (e.g. doorbell, telephone, network, smart home)–All types of metal pipe, rod or carrier (e.g. steel, copper, aluminium)–Reinforcing steel–Wooden beams–CavitiesSpecial measuring casesUnfavourable conditions fundamentally impair the measuring result:–Multi-layered walls–Empty plastic pipes and wooden beams in cavities and lightweight partition walls1 609 92A 5L6 | (29.12.2020)Bosch Power Tools