Rotary laser GRL 400 H, easy to use and always ready - the intuitively operated GRL 400 H rotary laser, controlled with a single button, is always prepared for outdoor leveling tasks. Its one-button control panel, electronic self-leveling feature, and convenient battery compartment ensure straightforward operation with easy setup and hassle-free battery changes - without needing to move the tool. With a leveling accuracy of 0.08 mm/m and an ADS shock warning function that alerts to positional changes of the device, the GRL 400 H prevents leveling errors and consistently delivers precise results. From determining cut and fill values for excavation and foundations to leveling concrete formwork and landscaping: this device performs excellently. Thanks to its IP56 protection against water and dust, this rotary laser withstands harsh conditions when used outdoors. The GRL 400 H can be powered by either rechargeable batteries or alkaline batteries.