Spectra Precision LL400 Laser Level User Manual
Sp ec tra p re ci si on l as er ll400 laser level

A New Standard in Rugged
Construction and Precise
Accuracy
Durable, highly accurate laser level
withstands the toughest job site
The fully automatic, self-leveling Spectra Precision
®
Laser LL400 sets a new standard in rugged 
reliability, handling a wide variety of general and 
concrete construction applications. Even in tough 
job site conditions, the LL400 consistently delivers 
reliable, accurate performance to increase your 
overall productivity and cost-savings.
The LL400 Laser Level features easy, one-button 
operation for basic leveling and provides reliable, 
highly accurate, long-range measurements, even 
for machine control applications.
The LL400 is designed to be durable and reliable, 
day in and day out, and features superior drop 
and weather protection. The rugged LL400 can 
withstand drops of up to 1 meter (three feet) onto 
concrete and tripod tip-over up to 1.5 meters 
(five feet). This strength, combined with full 
weatherproofing and dust-proofing, results in 
reduced downtime and lower repair costs.
The LL400’s self-leveling capability and optional 
RC601 remote control provide outstanding 
accuracy and ease of use. Since the LL400 levels 
itself when turned on, setting up is easy with fewer 
controls to deal with. The LL400 also features a 
single-axis slope mode to allow slopes on grade, 
while maintaining accuracy. Grade matching 
can also be performed by one person using the 
optional RC601 remote control.
Choice of Receiver
You can customize the LL400 to your specific 
application needs with a choice of the HL700 or 
CR600 receivers.
HL700 Laserometer
The Spectra Precision Laser HL700 Laserometer 
uses new technology to measure and display 
beam location and is ideal for use with the LL400 
transmitter. The HL700 features a digital readout of 
elevation that shows exactly how far you are from 
on-grade allowing quick elevation checks without 
moving the rod clamp. An anti-strobe sensor stops 
construction lights from setting off the receiver, 
and makes it easier to identify true laser beam 
signals. The protective over molded housing 
withstands a drop of 3 m (10 ft) onto concrete. The 
highly visible LED display and dual sided LCD’s 
allow you to work anywhere.
CR600 Receiver
Rugged, accurate and easy to use, the Spectra 
Precision Laser CR600 Receiver is ideal for 
longer range leveling and basic machine control 
applications. In addition to use as a handheld and 
rod-mounted unit, the CR600 can be mounted on a 
backhoe, small excavator or skid steer for machine 
control with 270-degree reception. It provides 
highly visible high, low or on-grade information.
LL400 Features & Benefits
• Fast setup, minimal training time and automatic
self-leveling minimize operating costs and boost 
productivity
• Highly rugged design and patented lighthouse
seal protects the rotor head and glass and 
offers superior drop and weather protection for 
reduced downtime
• Single-axis slope mode provides grade matching
with self-leveling cross axis for improved accuracy
• Energy-efficient design offers choice of
rechargeable or alkaline batteries for lower 
operating costs
LL400 Applications
•
Excavations
•
Slopes on grade
•
Leveling forms and footers
•
Screeding concrete
•
Driveways and ramps
•
Machine control
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LL400 Laser Level
