Prexiso PLT40LI Rechargeable Laser & Tape Measure

Safety Instructions

The safety instructions and the user manual should be read through carefully before the product is used for the first time. The person responsible for the product must ensure that all users understand these directions and adhere to them.

Symbols Used

• WARNING: Indicates a potentially hazardous situation or an unintended use which, if not avoided, will result in death or serious injury.
• CAUTION: Indicates a potentially hazardous situation or an unintended use which, if not avoided, may result in minor injury and/or appreciable material, financial and environmental damage.
• ℹ️ (Information): Important paragraphs which must be adhered to in practice as they enable the product to be used in a technically correct and efficient manner.

Permitted Use

• Measuring distances.

Prohibited Use

• Using the product without instruction.
• Using outside the stated limits.
• Deactivation of safety systems and removal of explanatory and hazard labels.
• Opening the equipment with tools (screwdrivers, etc.).
• Carrying out modification or conversion of the product.
• Use of accessories from other manufacturers without express approval.
• Deliberate dazzling of third parties; also in the dark.
• Inadequate safeguards at the surveying site (e.g., when measuring on roads, construction sites, etc.).
• Deliberate or irresponsible behaviour on scaffolding, when using ladders, when measuring near machines that are running or near parts of machines or installations which are unprotected.
• Aiming directly in the sun.

Hazards in Use

WARNING: Watch out for erroneous measurements if the product is defective, has been dropped, misused, or modified. Carry out periodic test measurements, particularly before, during, and after important measurements.

CAUTION: Never attempt to repair the product yourself. In case of damage, contact a local dealer.

WARNING: Changes or modifications not expressly approved could void the user’s authority to operate the equipment.

Limits of Use

The device is designed for use in areas normally habitable by humans. Do not use the product in explosion hazardous areas or in aggressive environments.

Areas of Responsibility

The person responsible for the instrument must ensure that all users understand these directions and adhere to them. This includes:

• Understanding the safety instructions on the product and in the User Manual.
• Being familiar with local safety regulations relating to accident prevention.
• Always preventing access to the product by unauthorized personnel.

Electromagnetic Compatibility (EMC)

The device conforms to the most stringent requirements of relevant standards and regulations. However, the possibility of causing interference in other devices cannot be totally excluded.

FCC Statement (Applicable in U.S.)

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.

Laser Classification

The device produces visible laser beams, which are emitted from the instrument. It is a Class 2 laser product in accordance with IEC 60825-1:2014.

WARNING: Do not stare into the laser beam or direct it towards other people unnecessarily. Eye protection is normally afforded by aversion responses including the blink reflex.

WARNING: Looking directly into the beam with optical aids (e.g., binoculars, telescopes) can be hazardous.

CAUTION: Looking into the laser beam may be hazardous to the eyes.

Laser Class 2 Product Specifications:

• Wavelength: 620 - 690 nm
• Pulse duration: > 600 ps
• Maximum radiant output power for classification: < 1 mW
• Pulse repetition frequency: 320 MHz
• Beam divergence: 0.16 mrad x 0.6 mrad

Tape Measure Safety: Retract tape measures slowly. Guide the tape back to retract it slowly in a controlled manner when you finish measuring. The quick return of the tape might damage the blade and blade control mechanism. To minimize injury, slowly retract metal blade tape, keeping fingers away from edges.

Instrument Set-up

Overview

The device is a 2-in-1 rechargeable laser and tape measure.

Device Buttons:

• On / Measure / Continuous Measuring: Powers the device on/off, initiates single distance measurements, and starts continuous measurement mode.
• Units / Measuring Reference: Used to change measurement units and to switch the measurement reference point (front or back of the device).
• Area / Volume / Pythagoras (2-Point/3-Point): Selects measurement modes for area, volume, and indirect measurements using the Pythagorean theorem.

Display

The display shows the main measurement result, secondary measurements (like distance in Pythagoras calculations), unit of measurement, and battery status.

Display Elements:

• Main line: Displays the primary measurement result.
• Secondary line: Displays additional data, such as intermediate distances in complex calculations.
• Units indicator: Shows the current unit of measurement (m, ft, in).
• Battery indicator: Shows the remaining battery charge.

Battery Charging

Charge the device when the battery symbol ? is empty or low. Use the provided Type-C charging port.

Operations

Switching ON/OFF

Press the power button to turn the device ON. The device automatically switches OFF after 120 seconds of inactivity to conserve battery.

Measuring Single Distance

Target Surfaces: Measuring errors can occur when measuring to colourless liquids, glass, styrofoam, or semi-permeable surfaces, or when aiming at high-gloss surfaces. Against dark surfaces, the measuring time increases.

1. Aim the active laser beam at the target surface.
2. Press the 'On/Measure' button once.
3. The measured distance (e.g., 23.979 m) is shown in the main line of the display.

Continuous Measuring

Target Surfaces: Similar considerations for target surfaces apply as for single distance measurements.

1. Aim the active laser beam at the target surface.
2. Press and hold the 'On/Measure' button for continuous measurement. The device will update the distance measurement as you move the laser point.

Unit Setting

Press the 'Units' button to cycle through the available measurement units: meters (m), feet (ft), inches (in), etc.

Measurement Reference Changing

By default, measurements start from the bottom of the device (end-face). Press the 'Measuring Reference' button to change the reference point to the top of the device (front-face) for specific measurements.

Area Measurement

This function calculates the area of a rectangular surface.

1. Press the 'Area' button.
2. Aim the laser at the first target point (corner of the area).
3. Aim the laser at the second target point (opposite corner of the area).
4. The calculated area (e.g., 39.343 m²) is shown in the main line, with the measured distance above.

Volume Measurement

This function calculates the volume of a rectangular prism.

1. Press the 'Volume' button.
2. Aim the laser at the first target point (e.g., one corner of the base).
3. Aim the laser at the second target point (e.g., the opposite corner of the base).
4. Aim the laser at the third target point (e.g., the height of the prism).
5. The calculated volume (e.g., 100.182 m³) is shown in the main line, with the measured distances above.

Pythagoras (2-Point)

This function calculates the length of the hypotenuse of a right-angled triangle, based on two measurements.

1. Press the 'Pythagoras (2-point)' button.
2. Aim the laser at the first target point.
3. Aim the laser at the second target point, ensuring it is perpendicular to the measuring surface (forming a right angle).
4. The calculated length (hypotenuse) is shown in the main line, with the measured distances above.

Pythagoras (3-Point)

This function calculates the height of an object based on three measurements, forming two right-angled triangles.

1. Press the 'Pythagoras (3-point)' button.
2. Aim the laser at the first target point.
3. Aim the laser at the second target point (perpendicular to the measuring surface).
4. Aim the laser at the third target point.
5. The calculated height is shown in the main line, with the measured distances above.

Technical Data

* The typical measurement uncertainty of ±3 mm is valid for measurements on white, diffusive, reflective targets up to 10m at low ambient light and moderate temperatures. For distances greater than 10 m, the measurement uncertainty could increase additionally by 0.1 mm/m. In unfavourable conditions (such as bright sunlight, targets with poor reflectivity, or high or low temperatures) the measurement uncertainty could further increase up to ± 6mm for distances below 10 m.

Troubleshooting

Care

• Clean the device with a damp, soft cloth.
• Never immerse the device in water.
• Never use aggressive cleaning agents or solvents.

Disposal

CAUTION: Flat batteries must not be disposed of with household waste. Care for the environment and take them to the collection points provided in accordance with national or local regulations. The product must not be disposed of with household waste.

Dispose of the product appropriately in accordance with the national regulations in force in your country. Adhere to the national and country-specific regulations.

Warranty

Two-Year Limited Warranty. This product is warranted to the original purchaser from the original purchase date for two years subject to the warranty coverage described herein. Please retain your receipt. This product is warranted to the original user to be free from defects in material and workmanship. If you believe that the product is defective at any time during the specified warranty period, please contact Prexiso customer service agent by sending email to info@prexiso-eu.com.

This warranty does not cover:

• Part failure due to normal wear or product abuse.
• Any parts have been altered or modified by anyone other than authorized Prexiso personnel or failure to install and operate equipment according to the guidelines put forth in the instruction manual.
• Any products or parts used for rental purposes, damage resulting from shipping (claims must be filed with freighter), accident, abuse, act of God, misuse, or neglect.

Prexiso will replace or repair the defective unit, at its option, subject to verification of the defect.

Any implied warranties arising from the sale of a Prexiso product, including but not limited to implied warranties of merchantability and fitness for a particular purpose, are limited to the above. Prexiso shall not be liable for loss of use of the product or other incidental or consequential damages, expenses, or economic loss, or for any claim of such damage, expenses, or economic loss. This warranty excludes any accessories. This warranty gives you specific legal rights, and you may also have other rights that vary from state.

For more information, visit: www.prexiso-eu.com