Product overview:
Spectra LL300N  Laser Level (Rechargeable):

The Spectra Precision® LL300N Laser Level features a very robust design with a metal sunshade that provides superior drop and weather protection. Built to withstand severe drops of up to 1 metre directly onto concrete, or up to 1.5 metre when pushed over on a tripod, means less downtime and cost due to damage caused by accidental an drop or tipover…… and lower repair costs over the life of the product.

In addition, a high level of dust/water protection to IP66 (Dust tight & Protected against powerful jets of water) makes the LL300N suitable for the most demanding of worksites.

The LL300N’s fully automatic self-leveling capability provides fast, accurate setup; with just one button press.

The included Rechargeable NiMH battery pack or optional alkaline batteries keeps the unit working with no downtime due to power loss.

The optional RC601 remote control gives you the option of controlling the unit from the measuring staff position, when doing slope matching. It also offers single-axis slope mode with self-levelling in the cross axis, providing more accurate grade measurements.

LL300N Laser Specifications:

Laser Source: 650 nm, Class 2, <3,4mW
Laser Accuracy:  ±2.2 mm at 30 m
Laser Operating Range: 500m diameter (with detector)
Remote Control Operating Range (RC601): 20m (infrared)
Self-leveling Range: ±5 degrees
Compensation Method: Electronic self-leveling
Drop Height on Concrete Performance: 3 ft (1 m)
Single Axis Manual Slope Mode: Yes (w/self-leveling mode
on the second axis), with optional RC601 remote control
Out-of-level Warning: Rotor stops, red out-of-level HI-LED flashes
Power Source: 4 x D-cell NiMH or alkaline batteries
Battery Life: Rechargeable – 45 hours, Alkaline – 90 hours
Battery Status LED: Flashing red LED
Rotation Speed: 600 RPM
Tripod Mount  (Horizontal and Vertical): 5/8” x 11
Operating Temperature:  -20 °C to 50 °C
Storage Temperature:  -20 °C to 70 °C
Water Resistant: Yes, IP66
Size: 27.2L × 19.7W × 20.1H cm
Weight: 2.7 kg
Warranty: 5 years

Product Video  https://www.youtube.com/watch?v=INGdeoB9jYU