Automatic horizontal laser which levels in less than 5 seconds & is quick & easy to set up & gives accurate results. LCD display communicates settings to the user for ease-of-use. Incorporated stud AC live wire & metal detector can be used as a precaution prior to drilling. Applications: Hanging pictures installing shelves hanging dado rails fitting curtain rails fitting light switches fitting electrical switches hanging wallpaper borders detection of studs metal pipes & AC live wire. Specifications: Laser class: 2. Levels automatically: yes. Accuracy: ±3 mm. /m. Total visible line span (varies with lighting & surface conditions): 4 m. (8 m. total). Voltage: 9 V. Metal pipe & live wire indicator: yes.