GRL 400 H rotating laser, Easy to operate and always ready - the GRL 400 H rotating laser is intuitive to operate with a single button and is ready for immediate use at any time when it comes to levelling outdoors. Its one-button control panel, electronic self-levelling and practical battery compartment mean uncomplicated employees with easy set-up and foolproof battery changes - without even having to move the tool. With an accuracy of ± 2.4 mm at 30 m and an ADS shock warning function that reports the smallest changes in the position of the device, the GRL 400 H prevents levelling errors and delivers consistently precise results. From determining excavation and removal values for excavations and foundations to levelling concrete formwork and landscaping: this device does its job excellently. Thanks to IP56 ingress protection against water and dust, this rotating laser can withstand the harsh conditions of outdoor use. Laser receiver LR 45 Professional (0 601 069 L00); battery compartment (1 609 203 M02); 2 x battery LR20 1.5V (D); 2 x 1.5 V LR6 battery (AA); L-BOXX 238 (1 600 A01 2G2)