1. Introduction
Thank you for choosing the Snakol SK-Series Laser Distance Meter. This device is a high-precision digital range finder designed for various measurement tasks, offering multiple modes for your daily needs. Please read this manual carefully before use to ensure safe and efficient operation.
2. Safety Information
This device uses a Class 2 laser. Please observe the following safety precautions:
- Do not stare directly into the laser beam.
- Do not aim the laser beam at people or animals.
- Avoid direct eye exposure to the laser beam.
- The laser type is 635-370nm, <1mW.
- Keep the device out of reach of children.
3. Package Contents
Upon unpacking, please verify that all items are present and in good condition:
- Snakol Laser Distance Meter (SK-Series)
- Protective Pouch
- Lanyard
- User Manual
- White Reflective Card (for specific measurement conditions)

4. Product Overview
Familiarize yourself with the components and controls of your laser distance meter:

- High Definition Screen: Displays measurement results, mode indicators, battery level, and other information.
- Laser Emitter/Receiver: Located at the top of the device for sending and receiving laser signals.
- MEAS Button: Initiates measurements.
- FUNC Button: Cycles through different measurement functions (Area, Volume, Pythagorean, etc.).
- +/- Button: Used for addition/subtraction measurements and sound control.
- Reference Button: Changes the measurement reference point (front or rear end of the device).
- CLEAR/OFF Button: Clears the current measurement or turns the device off.
5. Setup
5.1 Battery Installation
The device requires 3 x 1.5V AAA batteries (not included). To install:
- Open the battery compartment cover on the back of the device.
- Insert three AAA batteries, ensuring correct polarity (+/-).
- Close the battery compartment cover securely.

6. Operating Instructions
6.1 Power On/Off
- Press the MEAS button once to turn on the device.
- Press and hold the CLEAR button to turn off the device.
- The device will automatically shut down after 180 seconds of inactivity.
6.2 Changing Measurement Units
After powering on, short press the FUNC button to cycle through measurement units: meters (m), inches (in), feet (ft), and feet/inches (ft/in).
6.3 Setting Measurement Reference
The device can measure from its front end or rear end. Press the Reference button to switch between these two reference points. The current reference point is indicated on the screen.
6.4 Measurement Modes
Press the FUNC button to cycle through the following measurement modes:

6.4.1 Single Measurement
Select the single measurement mode. Point the laser at the target and press the MEAS button. The distance will be displayed instantly.

6.4.2 Continuous Measurement
Select continuous measurement mode. Press MEAS once to start. Move the device, and the display will update in real-time, showing maximum and minimum values. Press MEAS again to stop.
6.4.3 Area Measurement
Select area measurement mode. The screen will prompt you to measure length and width. Take two consecutive single measurements (length, then width). The device will automatically calculate and display the area.

6.4.4 Volume Measurement
Select volume measurement mode. The screen will prompt for length, width, and height. Take three consecutive single measurements. The device will automatically calculate and display the volume.
6.4.5 Pythagorean Measurement
Select Pythagorean measurement mode. This mode is used to calculate indirect distances (e.g., height of a wall) using the Pythagorean theorem. Follow the on-screen prompts to measure the hypotenuse and one leg of a right-angled triangle. The device will calculate the unknown side.

6.4.6 Addition/Subtraction Measurement
After taking a measurement, press the +/- button to enter addition or subtraction mode. Take another measurement, and the device will add or subtract it from the previous result.
6.5 Data Storage
The device can store up to 20 sets of measurement data. You can save and view data at any time.

6.6 Buzzer Control
The buzzer state is adjustable. Use the +/- button to toggle the buzzer sound on or off.
7. Specifications
Detailed specifications for the Snakol SK-Series Laser Distance Meter:
| Feature | Specification |
|---|---|
| Product Models | SK-40A, SK-50A, SK-70A, SK-100A, SK-120A, SK-50G, SK-70G, SK-100G, SK-120G |
| Measuring Range | 0.05M to 40M/50M/70M/100M/120M (depending on model) |
| Measurement Accuracy | ±2mm |
| Measuring Unit Options | m, in, ft, ft/in |
| Measuring Time | 0.25S |
| Laser Type | 635-370nm, <1mW |
| Laser Class | Class 2 |
| Protection Grade | IP54 (Dust and waterproof) |
| Data Storage | 20 groups |
| Buzzer | Switch state adjustable, Adjustable power-on status |
| Laser Auto Off | 30 seconds without operation |
| Automatic Instrument Shutdown | 180 seconds without operation |
| Operating Temperature | 0-50°C |
| Storage Temperature | -20~65°C |
| Level | Logistics level |
| Measuring Reference | Front end, Rear end |
| Power Supply | 3 x 1.5V AAA batteries (NOT INCLUDE) |
| Dimensions | 121 x 52 x 28.5 mm |
| Body Weight | 168g |
| Certification | CE, RoHS |
8. Maintenance
- Keep the device clean and dry. Wipe with a soft, damp cloth. Do not use abrasive cleaners or solvents.
- Store the device in its protective pouch when not in use.
- Remove batteries if the device will not be used for an extended period to prevent leakage.
- The IP54 rating provides protection against dust and splashing water, but the device is not fully waterproof. Avoid submerging it in water.
9. Troubleshooting
- Device not turning on: Check battery installation and ensure batteries are not depleted. Replace if necessary.
- Inaccurate measurements: Ensure the laser is aimed at a flat, non-reflective surface. Use the white reflective card for difficult surfaces or long distances. Verify the correct measurement reference point is selected.
- Error message on screen: Refer to the specific error code in the full user manual (if available) or try restarting the device.
- Laser not visible: Ensure the device is powered on and the laser is activated. In bright light conditions, the laser dot may be harder to see.
10. User Tips
- For best accuracy, especially over longer distances or in bright conditions, use the included white reflective card as a target.
- Always ensure the device is stable and level when taking measurements, particularly for area, volume, and Pythagorean calculations.
- Practice with different measurement modes in a familiar environment to get comfortable with the device's functions.
- Keep the laser lens clean to avoid measurement errors.
11. Warranty and Support
For warranty information and technical support, please refer to the official product documentation or contact the seller directly. Keep your purchase receipt as proof of purchase.