Introduction
Thank you for choosing the RockSeed S2-BT Digital Laser Distance Meter. This device is designed for precise and efficient distance measurements, offering various functions for both indoor and outdoor applications. Please read this manual thoroughly before using the device to ensure safe and optimal operation. Keep this manual for future reference.

Image: Overview of the RockSeed S2-BT Digital Laser Distance Meter.
Setup
1. Unboxing and Components
Carefully remove all items from the packaging. Ensure all components are present:
- RockSeed S2-BT Digital Laser Distance Meter
- 1.5V AAA Batteries (2 included)
- User Manual
- Hand Strap
- Cloth Bag

Image: Contents of the RockSeed S2-BT package, including the laser measure, batteries, manual, hand strap, and cloth bag.
2. Battery Installation
- Locate the battery compartment on the back of the device.
- Slide open the battery cover.
- Insert two 1.5V AAA batteries, ensuring correct polarity (+/-).
- Close the battery cover securely.
Operating Instructions
1. Power On/Off and Clear
- To power on, press the CLEAR/ON button.
- To power off, press and hold the CLEAR/ON button for 3 seconds.
- To clear the current measurement or exit a function, press the CLEAR/ON button briefly.
2. Basic Distance Measurement
- Power on the device.
- Point the laser at the target surface.
- Press the MEAS button. The measurement will be displayed on the screen.
3. Unit Conversion
The device supports multiple units of measurement (Meters, Inches, Feet, Feet+Inches).
- To switch units, press and hold the UNIT button. The unit will cycle through M/In/Ft/Ft+In.

Image: Display showing different unit conversions (ft+in, in, m, ft) on the RockSeed S2-BT.
4. Measurement Reference Point
The device can measure from the front or the rear of the unit.
- Press the reference point button (icon with a line at the top or bottom) to toggle between front and rear measurement.
- The display will show an icon indicating the active reference point.

Image: Illustration of measuring from the front and back reference points of the laser distance meter.
5. Multiple Measurement Modes
The S2-BT offers various measurement functions:
- Continuous Measurement: Press and hold the MEAS button to continuously measure distance as you move the device.
- Area Measurement: Press the function button (icon with a square) once. Take two consecutive distance measurements (length and width). The device will calculate and display the area.
- Volume Measurement: Press the function button (icon with a cube) twice. Take three consecutive distance measurements (length, width, and height). The device will calculate and display the volume.
- Pythagorean Measurement: Press the function button (icon with a triangle) three or four times for different Pythagorean modes. Follow the on-screen prompts to measure the required sides of a triangle, and the device will calculate the unknown side.

Image: Visual representation of continuous, area, volume, and Pythagorean measurement modes.
6. Add/Subtract Measurements
Use the + and - buttons to add or subtract measurements. Perform a measurement, then press + or -, then perform another measurement. The result will be displayed.
7. Mute Setting
To turn the measurement beep sound on or off, press the mute button (speaker icon). This is useful for quiet environments.
8. Data Memory
The device can store up to 20 groups of measurement data. Use the memory button (icon with stacked lines) to review stored data. To manually delete data, use the CLEAR/ON button.
Features
- High Accuracy & Unit Switchable: Equipped with two bubble levels for enhanced precision (up to ±1/16 inch accuracy). Measures distances up to 328 feet. Easily switch between Meters, Inches, Feet, and Feet+Inches.
- LCD Backlight: A large backlit screen ensures clear visibility in dark areas or low-light conditions.
- Durable and Handy Design: Features an IP54 waterproof and dust-proof rating for maximum protection. Its portable size and hard rubber body provide a secure grip. A wrist strap is included for steady handling and easy carrying.

Image: The device displaying measurements on its HD large screen with LCD backlight, suitable for various lighting conditions.

Image: The compact and durable design of the laser measure, shown fitting easily into a pocket.
Maintenance
- Cleaning: Use a soft, damp cloth to clean the device. Do not use abrasive cleaners or solvents.
- Storage: Store the device in its cloth bag in a cool, dry place when not in use. Remove batteries if storing for extended periods to prevent leakage.
- Avoid Impact: While durable, avoid dropping the device or subjecting it to strong impacts to maintain accuracy.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on | Low or dead batteries; Incorrect battery installation | Replace batteries; Check battery polarity |
| Inaccurate measurements | Unstable surface; Obstruction in laser path; Extreme environmental conditions | Ensure stable measurement; Clear laser path; Use indoors or in stable conditions |
| Laser not visible outdoors | Bright sunlight | Use in shaded areas or indoors for best visibility |
Specifications
- Model: S2-BT
- Measuring Range: Up to 328 feet
- Accuracy: ±1/16 inch
- Units: M/In/Ft/Ft+In
- Battery Type: 2 x AAA 1.5V Alkaline batteries
- Automatic Shut-down: After 150 seconds of no operation
- Data Memory: 20 groups
- Waterproof/Dust-proof Rating: IP54
- Material: Acrylonitrile Butadiene Styrene
- Item Weight: 120 Grams (approx. 4.2 ounces)
Warranty and Support
All RockSeed products are certified by international standards including CE, FCC, FDA, and ROHS. We provide 2 years of technical support and after-sales service for laser measuring tools in the United States.
Contact Information:
- After-sales Service Phone Number: 904-900-2136 (Monday to Friday, 9:00 a.m. to 6:00 p.m. Eastern Time)
- Email: Reply within 24 hours on weekdays.
We are committed to continuous improvement and prioritize user experience. Please do not hesitate to contact our Florida after-sales support center for any assistance.