Accurate to 20m without use of the receiver, employing the included LR1 Receiver in conjunction with the Bosch GRL 400H increases the Laser Level's range to an incredible 400m. The LR1 can precisely pinpoint the beam long after it has ceased to be visible unaided, delivering a degree of long range levelling performance that will prove invaluable to professional construction workers & engineers. Robustly housed & IP56 dust & splash protected, the Bosch GRL 400 H is also fitted with an automatic shock warning function, which prevents levelling errors in the event of shocks or vibrations, making it perfectly suited for use even in the busiest of outdoors environments. Two softgrip coated handles allow for accurate manual control of the beam's direction. Also included with your purchase is the BT 170 HD Tripod, providing highly portable & sturdy laser level support & height adjustment, & the GR 240 Levelling Rod, which can be used in conjunction with the level for accurate calculation of the differences in elevation between different areas (useful for cut & fill & general construction applications). Specifications • Laser diode: 635 nm, < 1 mW • Laser class - 2 • Working range with receiver: 400 m • Levelling accuracy: ± 0.08 mm/m • Self-levelling range: ± 5° (8%) • Dust and splash protection: IP 65 • Rotation speed - 600 rpm • Power supply - 2 x 1.2 V HR20 (D) (9 Ah) • Power supply - 2 x 1.5 V LR20 (D) • perating time, max. Rechargeable batteries (NiMH): 30 h • Operating time, max: Alkaline 50 h • Tripod thread - 5/8" • Weight, approx: 1,8 kg • Length - 190 mm • Width - 180 mm • Height - 170 mm • Shipping Weight: 7kg Features and Benefits • IP 65 protection against dust and water • Easy to understand, single button operation • Range up to 400 m when used with the supplied LR 1 Professional receiver • Accurate with a high precision of 0.08 mm/m • Robust protective aluminium cage resists a drop of up to 1 m • Complete power, supplied with alkaline batteries and rechargeable battery charger set • Two ergonomic soft grip handles • Easy to install on to a tripod • Self-levelling of 8% (± 5°) in the horizontal mode • Automatic shock warning function prevents levelling errors in the event of vibrations or shocks Contents • Carry case • LR1 Professional Receiver • GR240 Cut & Fill Rod • BT170HD Tripod