DeWalt Laser Distance Meter User Manual

: June 7, 2024
: Dewalt

**DeWalt Laser Distance Meter User Manual

M1905**

Introduction

Firstly thank you for your choice on our handhold laser distance meter.Please carefully read the safety instructions and the user manual before using this product, otherwise it may result in hazardous laser radiation and electric shock.

Safety Instructions

This product is a class II laser product. Please DO NOT stare into beam at any time when operating this product!
Please DO NOT looking directly into the beam with optical aids to avoid causing serious laser radiation!
Please DO NOT remove any safety labels on this product!

Caution

Please DO NOT use this product in an unstable situation.
Please avoid kids to contact and use the meter.
Please DO NOT disassemble or restructure the meter. Otherwise, it may lead to laser emission resulting in unnecessary personal injury.
Please keep the manual, it is useful when you use it.

Configuration

Laser distance meter

|

1pc

---|---

AAA battery

| 2pc
User manual|

1pc

Packing box

| 1pc
Hand rope|

1pc

Basic Function

Single Measurement

| √
---|---
Continuous Measurement (Max/Min)|

√

Area/Volume/Pythagoras

|

√

Plus and Minus

|

√

Unit Conversion

| √
Measuring Reference|

√

Silence Function

| √
Historical Data Review|

20Groups

Error Code

| √
Battery Power Indication|

√

Laser Auto Switch of

| 30s
Instrument Auto Switch off|

180s

Measuring Range

|

40m ：0.05m~40m
50m ：0.05m~50m
60m ：0.05m~60m
70m ：0.05m~70m
80m ：0.05m~80m
100m ：0.05m~100m
120m ：0.05m~120m

Measuring Accuracy (Standard Deviation)

| ±2.0mm
Measuring Unit|

m,ft,in

Area Unit

| m²,ft²,in²
Volume Unit|

m³,ft³,in³

Laser Type

| 620~690nm
Laser Class|

class II ,<1mW

Operating Temperature

| 0~+40℃
Storage Temperature|

-20~+65℃

Batteries

| AAA(Alkaline),2×1.5V
Working time(Fully charged)|

5000 times

Weight (Without batteries)

| Approximate 91g
Dimension (LWH)|

117X53X27mm

Comment:

When measuring distance within 10m,measurement accuracy is±2mm； more than 10m,measurement accuracy is calculated as
*follows:±2mm±0.05(D-10)(D:** Measuring Distance, Unit: m)
When measuring too poorly reflecting target or very rough surfaces, or the environment temperature is too high or too low or ambient brightness is too bright, such as under sunlight, The deviation will be unfavorable.

Forbidden:

Opening or repairing the equipment without allow.
Measuring on sun.
Others measuring out of appointed range.
Immersing the equipment in water.
Cleaning the lens using alcohol or any other organic solvent.
Wiping the lens directly with fingers or other rough surfaces.
Powering the equipment beyond the rated DC voltage.

Battery Installation

According to figures, remove battery compartment lid and insert 2*AAA batteries (alkaline).

Structure of Product

Product overview

Laser receiver
Laser emitter
Display screen
Spirit bubble
Power key/Measuring key
Minus key/Unit switch key
Clear key/Exit key/OFF key
Spirit bubble
Plus key/Reference switch key
Function key/Sound key
Battery compartment

Operation

Switch-on

Short-time press to switch on the equipment, screen will shows as below very quickly:

Switch-on

Then the meter enter Single Measurement Mode and laser point is opened, indication as shown as figure A. Laser point is automatically shut down if no any operation after 30 seconds. Or short-time press to close the laser point, indication as shown as figure B. Short-time press again to open laser point, indication as shown as figure C.

Single Measurement Mode

Change Measurement Reference

Default measuring reference is the bottom of meter, indication as shown as figure D. Long-time press to change the measuring reference to the top of meter, indication as shown as figure E.

Changing Measurement Reference

Unit Conversion

Factory default that unit is m, indication as shown as figure F. Long-time press to switch unit m to Ft, indication as shown as figure G. Long-time press again to switch the unit Ft to In, indication as shown as figure H. (Note: Long-time press to switch the unit of measurement, the value will switch correspondent at the same time if there is value of measurement.)

When the unit is m², Long-time press , the unit will switch unit m² to Ft². long-press again, switch unit “Ft²” to “in²”

When the unit is m³, Long-time press , the unit will switch unit m³ to Ft³. long-press again, switch unit “Ft³” to “in³”.

Later when you switch on meter, the meter will remember the last measuring unit you used.

Unit Conversion

Change Measurement Mode

Default setting of measurement is Single Measurement Mode, indication as shown as figure I. Short-time press to switch Area Measurement Mode, indication as shown as figure J. Short-time press again to switch Volume Measurement Mode, indication as shown as figure K. Short-time press again to switch Single Pythagorean Theorem Measurement Mode, indication as shown as figure L. Short-time press again to switch Dual Pythagorean Theorem Measurement Mode, indication as shown as figure M. Short-time press again to switch Historical Data Review Mode, the last measuring data will be displayed, indication as shown as figure N. (Note: At this Historical Data Review Mode, there will be some measuring data that factory tested. It does not mean this equipment has been used.)

Changing Measurement Mode

Switch off

The equipment can be switched off at any time by long-time press .

Function description

Single measurement

At the Single Measurement Mode, aim the laser onto target. Short-time press . The measuring result will be displayed immediately as shown as figure O.