STANLEY STHT77801-A Laser Distance Meter User Manual

1. Introduction

The STANLEY STHT77801-A is a professional-grade laser distance meter designed for accurate and efficient measurement tasks. This device offers a working range of up to 40 meters with a precision of ±(2mm+5x10^-5D). It is ideal for various applications including home improvement, DIY projects, and professional construction work, enabling quick calculations for area and volume.

Figure 1: STANLEY STHT77801-A Laser Distance Meter

This manual provides detailed instructions on how to set up, operate, and maintain your laser distance meter to ensure optimal performance and longevity. Please read this manual thoroughly before using the device.

2. Safety Information

This device is a Class 2 Laser Product. Observe the following safety precautions:

• CAUTION: Laser radiation is emitted from this aperture. Do not stare into the laser beam.
• Do not intentionally direct the laser beam at people or animals.
• Avoid direct eye exposure to the laser beam.
• Do not disassemble or modify the device. Unauthorized repairs can result in laser radiation exposure.
• Keep the device out of reach of children.
• Always read the user manual before operation.

Figure 2: Back of device showing laser warning label

The laser type is 650nm, <1mW, conforming to IEC 60825-1:2014 and EN 60825-1:2014/A11:2017 standards.

3. Product Components and Overview

The STANLEY STHT77801-A Laser Distance Meter package includes:

• 1 x Laser Distance Meter (40 Metres)
• 1 x Carry Pouch
• 2 x AAA Batteries (1.5V)
• User Manual (this document)
• Warranty Card

Figure 3: Product in retail packaging

Device Layout

Figure 4: Front view with main components labeled

• Laser Beam: Emits the laser towards the target point for measurement.
• Measurement Display: Shows precise measurements and other information.
• Power Supply Indicator: Displays battery level.
• Auxiliary Display: Provides additional measurement data.

Figure 5: Control buttons labeled

• Turn On / Measuring Button: Powers on the device and initiates a measurement.
• Function / Storage Button: Selects measurement modes (Area, Volume, Pythagorean) and saves results.
• Addition & Subtraction / Sound Button: Adds or subtracts values and controls button sound.
• Unit / Reference Point Button: Switches measurement units (m/in/ft) and sets the reference point.
• Off / Eliminate Button: Powers off the device or clears the current measurement.
• Surface Level: Integrated bubble levels to check alignment and ensure level surfaces for accurate measurements.

4. Setup

Battery Installation

The STANLEY STHT77801-A requires two 1.5V AAA batteries for operation.

1. Locate the battery compartment cover on the back of the device.
2. Slide the cover open.
3. Insert two AAA batteries, ensuring correct polarity (+/-) as indicated inside the compartment.
4. Close the battery compartment cover securely.

The device is now ready for use. The battery life is approximately 8000 single measurements.

5. Operating Instructions

Basic Measurement

1. Press the Turn On / Measuring button to power on the device. The laser will activate.
2. Aim the laser beam at the target point.
3. Press the Turn On / Measuring button again to take a measurement. The distance will be displayed on the screen.
4. For continuous measurement, press and hold the Turn On / Measuring button. The display will update in real-time as you move the device.

Figure 6: Taking a distance measurement

Changing Measurement Units

Press the Unit / Reference Point button to cycle through available measurement units: meters (m), inches (in), and feet (ft).

Area and Volume Measurement

The device can calculate area and volume automatically.

1. Press the Function / Storage button until the desired mode (Area or Volume) icon appears on the display.
2. Follow the on-screen prompts to take the required measurements (e.g., length, width for area; length, width, height for volume).
3. The calculated area or volume will be displayed.

Pythagorean Proposition Measurement

Use this mode to indirectly measure heights or distances using the Pythagorean theorem.

1. Press the Function / Storage button until the Pythagorean mode icon appears.
2. Follow the on-screen prompts to take the necessary measurements (e.g., hypotenuse and one leg).
3. The device will calculate the unknown side.

Add and Subtract Measurements

To add or subtract measurements:

1. Take the first measurement.
2. Press the Addition & Subtraction button (once for addition, twice for subtraction).
3. Take the second measurement.
4. The result of the addition or subtraction will be displayed.

Min/Max Value Tracking

During continuous measurement, the device automatically tracks and displays the minimum and maximum measured values.

Automatic Shutdown

To conserve battery life, the laser will automatically cut off after 30 seconds of inactivity, and the device will shut down completely after 180 seconds of inactivity.

6. Maintenance

Proper maintenance ensures the longevity and accuracy of your STANLEY Laser Distance Meter.

• Storage: Do not store the meter in high temperature or strong humidity environments for extended periods. If not used frequently, remove the batteries and store the device in its portable bag in a cool, dry place.
• Cleaning: Keep the device surface clean. Use a wet soft cloth to wipe off dust. Avoid using erosive liquids for cleaning, as they can damage the device.
• Optical Components: The laser output window and its focus lens should be maintained according to standard optical device cleaning procedures. Use a lens cleaning cloth or solution designed for optics.

Figure 7: Device stored in its protective carry pouch

7. Troubleshooting

If you encounter issues with your laser distance meter, consider the following general troubleshooting steps:

• Device not turning on: Check if the batteries are correctly inserted and have sufficient charge. Replace batteries if necessary.
• Inaccurate measurements: Ensure the laser lens is clean. Verify the reference point setting. Ensure the target surface is suitable for laser reflection.
• Display issues: If the display is dim or flickering, replace the batteries.

For persistent issues, please contact customer support.

8. Specifications

Figure 8: Key specifications overview

9. Warranty and Support

Warranty Information

This STANLEY product comes with a 1-year warranty provided by the manufacturer from the date of purchase. The warranty covers manufacturing defects only. Please refer to the warranty card included in your package for full terms and conditions.

Customer Support

For any queries, technical assistance, or warranty claims, please contact STANLEY customer care:

• Phone: 1800-203-0644 (Monday - Saturday, 09:00 AM - 06:00 PM IST, except government holidays)
• Email: sbd-customercommunications@sbdinc.com
• WhatsApp: Scan QR code or click here to chat

Figure 9: Customer Care Contact Information

10. Product Video Overview

Watch this official product video for a visual overview of the STANLEY Laser Distance Meter's features and capabilities.