The RVL100 laser receiver is used in combination with the Leica LINO series of line lasers to pick up the laser signal at longer distances or when visibility is reduced. It will allow detection of red pulsed laser beams in difficult light conditions for distances up to 200ft. It does not find laser dots, only pulsed laser lines. Features include a large reception window of 42 mm (1.65") to find the laser beam quickly, optical and acoustic signals help to locate the laser plane, receiver holder with quick adjustment feature for easier product use, ergonomically designed with display on both the front and back of receiver, magnets on receiver allow for direct attachment to onto metal surfaces, such as steel studs. It is forward and backward compatible with all LINO line laser products in pulse mode. Two-year warranty out of the box, with an additional year for registering product. Power is supplied from a standard 9V battery.