DT300A-en-GB_v1.5 2/17
2
Introduction
Congratulations on your purchase of the Extech Model DT300 Laser Distance Finder. This meter
measures distance up to 60m (197 ft) and calculates Area and Volume. In addition, the DT300
includes a laser pointer for accurate targeting. This device is shipped fully tested and calibrated
and, with proper use, will provide years of reliable service. Please visit our website
(www.extech.com) to check for the latest version and translations of this User Manual, Product
Updates, Product Registration, and Customer Support.
Safety Instructions
This meter has been designed for safe use, but must be operated with caution.
WARNING: Do not directly view or direct the laser pointer at an eye.
Low power visible lasers
do not normally present a hazard, but may present some potential for hazard if viewed directly
for extended periods of time.
Laser classification (Class 2)
The DT300 produces a visible Class 2 laser beam from the top of
the instrument. Do not stare into the laser beam or direct the beam
toward anyone’s eyes. Eye protection is normally an automatic
response (‘blink reflex’, for example).
Warning:
Do not look directly into the laser beam using optical
aids such as binoculars or telescopes. This can create a hazard.
Permitted Uses
Measure
Distances
Compute Area and Volume
Measure
Angles
Prohibited Uses
Exceeding the specified measurement limits
Compromising or deactivating the safety systems built into the meter
Removal of hazard or explanatory labels affixed to the meter
Modifying or converting the instrument
Using third party accessories
Operation on scaffolding or ladders without proper safety precautions
Measuring near machines that are operating or near parts of machine installations that are
unprotected
Aiming the meter into the sunlight
Outdoor measurements or measurements on roads, near construction sites, etc. without
adequate safeguards
