EASY-TO-USE: Handy and compact red beam receiver for indoor and outdoor use up to 200 m AUDIBLE AND VISUAL SIGNALS: Alignment of the laser beam plane, visual and audible signals, for working in various lighting conditions IDEAL FOR THE JOB SITE: Highly robust with IP65 protection against dust and water jets. COMPATIBLE WITH: Rotation lasers GRL 400 H and GRL 300 HV ITEMS INCLUDED: LR 1, 1 x 9V Battery, bracket, Weight: 1.10231131 Pounds, Manufacturer: Bosch Professional