Please note that this product does not include a battery; it requires a 9V square battery, allowing you to choose the power source that best suits your needs Crafted from, this receiver is lightweight yet robusts, making it essential tool for any professional or enthusiast looking to improve their leveling tasks Suitable for construction workers, interior decorators, engineering surveyors, and enthusiasts who require Levels measurements in their projects enhances your measurement accuracy with our Green Light Receiver, specifically designed to precisely Captures green light signals from various levels, ensuring efficient and accurate measurements Perfectly suited for use on construction Site, interior decoration positioning, road and bridge construction, as well as garden Designs, offering versatilities across multiple applications, Manufacturer: Tsophreniq