Spectra Precision 1650 Ft Diameter Self-level Rotary Laser Level; Interior/ Exterior Kit LL300N-2 Built to withstand severe drops of up to 3 ft (1 m) directly onto concrete; or up to 5 ft (1.5 m) when pushed over on a tripod means less downtime and cost due to damage caused by accidental drop.FEATURES:Automatic self-levelingAccuracy 3/32 inch @ 100 ft (2.2mm @ 30 m)Working range of 1;650 ft (500 m) diameterSimple one-button operation for quick start upHeight of Instrument Alert - unit stops rotatingwhen jarred to avoid erroneous readingsSingle axis manual slope mode(with RC601 Remote Control)Complete kit available and fits in one casewith tripod and grade rodExtremely durable and portable5 Year warrantyINCLUDES:LL300N Laser LevelHL450 Laser ReceiverClamp C45Q104025 TripodGR152 Grade Rod Inches 15FTAll in one Carrying CaseSPECIFICATIONS:LL300N Laser SpecificationsLaser Source: 650 nm; Class 2; Laser Accuracy: ±3/32 in at 100 ft (±2.2 mm at 30 m)Operating Range: 1;650 ft (500 m) diameterSelf-leveling Range: ±5 degreesCompensation Method: Electronic self-levelingDrop Height on Concrete Performance: 3 ft (1 m)Single Axis Manual Slope Mode: Yes (w/self-leveling modeon the second axis); with optional RC601 remote controlOut-of-level Warning: Rotor stops; red out-of-level HI-LED flashesPower Source: 4 x D-cell NiMH or alkaline batteriesBattery Life: Rechargeable - 45 hours; Alkaline - 90 hoursBattery Status LED: Flashing red LEDRotation Speed: 600 RPMTripod Mount (Horizontal and Vertical): 5/8” x 11Operating Temperature: -4 °F to 122 °F (-20 °C to 50 °C)Storage Temperature: -4 °F to 158 °F (-20 °C to 70 °C)Water Resistant: Yes; IP66Size: 10.7L × 7.7W × 7.9H in (27.2L × 19.7W × 20.1H cm)Weight: 5.9 lbs (2;7 kg)Warranty: 5 YearsHL450 Receiver SpecificationsDigital Readout Units: mm; ft; in; fracReception Height: 4 inches (102 mm)Three On-grade Sensitivities:- Fine ~1/16 in (1 mm)- Medium ~1/4 in (5 mm)- Calibration Mode ~1/64 in (0.1 mm)Battery Life (2 x AA): 70+ hrsAutomatic Shutoff: 30 minutesOperating Temp.: -4°F to 122°F (-20°C to 50°C)Dust & Waterproof: Yes IP67Weight without Clamp: 13.1 oz (0.371 kg)Warranty: 3 Years; 2 Years “No Excuses”" Spectra Precision 1,650' Diameter Self-level Rotary Laser Level; Interior/ Exterior Kit LL300N-2