1. Safety Information
Thank you for purchasing this product. Please read this manual carefully before using the instrument. Failure to follow these guidelines may result in damage to the instrument, affect measurement accuracy, or cause personal injury.
1.1 Laser Safety
WARNING: This product is a Class 2 laser product and complies with IEC 60825-1:2014.
- Do not look directly at the laser beam or aim it at others at any time.
- Do not use this product with other optical products, as this may cause severe laser radiation.
- Do not break any safety warning signs on the instrument.
1.2 General Precautions
- Do not use the instrument on an unsteady footing.
- Keep this instrument out of the reach of children.
- Do not attempt to disassemble or modify this instrument. Unauthorized modifications may increase laser emission power and cause personal injury.
- Do not use the instrument near aircraft or medical equipment.
- Avoid using the instrument in environments with flammable or explosive liquids, gases, or dust.
- Electromagnetic radiation from the instrument may cause interference with other devices. Incorrect measurement results may occur if the instrument is damaged or dropped.
- Do not immerse the instrument in water.
- Clean the lens with a damp soft cloth. Do not use alcohol, organic solvents, or other rough objects on the lens.
- Use only the rated voltage power source for charging.
- Please keep this manual for future reference.
2. Product Overview
The REVASRI T2 is a versatile 2-in-1 measurement tool, combining a traditional 5-meter tape measure with a 40-meter infrared laser distance meter. It features a digital display for clear readings and multiple measurement modes.
3. Components and Display
The device features an intuitive layout for ease of use. Refer to the diagram below for component identification.
3.1 Physical Components
- Unlock Button: Releases the tape measure.
- Function Switching Button (▣): Cycles through measurement modes.
- Laser Emitter: Projects the laser beam for distance measurement.
- Power On/Measure Button (▲ MEAS): Powers on the device and initiates measurements.
- Power Off Button (C): Powers off the device.
- Tape Measure: Traditional 5-meter steel tape.
- Charging Port: USB-C port for recharging the internal battery.
3.2 Digital Display Elements
- Measuring Reference Indicator: Shows whether front or rear reference is active.
- Laser Indication: Indicates when the laser is active.
- Measurement Mode Icons: Displays current mode (e.g., single, area, volume, Pythagorean).
- Data Storage Indicator: Shows if data is being stored or viewed.
- Power Indicator: Battery level display.
- Main Display Area: Shows measurement results.
4. Setup
4.1 Initial Charging
The device comes with a rechargeable lithium battery. Before first use, or if the battery is low, connect the included Type-C data cable to the charging port and a suitable USB power adapter.
5. Operation
5.1 Power On/Off
- Power On: Short press the ▲ MEAS button. The instrument will turn on, and the laser point will activate automatically. The screen will display the default measurement mode. If no operation is performed for 30 seconds, the laser will turn off automatically.
- Power Off: Press and hold the C button to turn off the instrument from any state.
5.2 Unit Switching
The default unit after power-on is meters (m). To switch units, long press the ▣ button. The sequence for unit switching is: meters (m) → inches (in) → feet and inches (’ ”) → feet (ft).
5.3 Measurement Modes
The device supports various measurement modes. Short press the ▣ button to cycle through the modes:
- Single Measurement: Default mode. Aim the laser dot at the target and short press ▲ MEAS. The result appears instantly.
- Continuous Measurement: Long press ▲ MEAS to enter. The device will continuously measure and display real-time distance, showing MAX and MIN values.
- Area Measurement: After selecting this mode, measure two sides of the target. The device will calculate and display the area.
- Volume Measurement: After selecting this mode, measure three sides (length, width, height) of the target. The device will calculate and display the volume.
- Pythagorean Measurement: For indirect height or distance measurements.
- First, place the rangefinder horizontally and measure the base.
- Then, keeping the reference plane unchanged, aim the laser at the lower end of the target and measure.
- Finally, aim the laser at the upper end of the target and measure the hypotenuse. The device will calculate and display the height.
- Storage Mode: Displays stored measurement data.
- Reference Switching Mode: Allows switching between front and rear measurement references.
5.4 Reference Switching (Front/Rear)
The tape measure supports two baseline measurements: front reference and rear reference. The default is back reference.
- To Switch Reference: Put the equipment into Storage Mode (AEF is displayed on screen). Then, short press the ▲ MEAS button for 3 seconds to toggle between front and rear reference.
- Rear Reference Measurement: The measurement is taken from the back of the device. The displayed length is the measured length + the length of the device itself.
- Front Reference Measurement: The measurement is taken from the front of the device. The displayed length is the direct measured length.
5.5 Data Storage
The instrument can automatically record and store the last 30 measurements. In Storage Mode, short press ▲ MEAS to view records one by one. To clear the last set of data, short press C.
Video 1: Demonstration of the REVASRI Laser Tape Measure's various functions, including power on/off, unit switching, and different measurement modes like length, area, volume, and Pythagorean measurements.
6. Maintenance
- Avoid storing the instrument in high temperature and high humidity environments for extended periods.
- Keep the surface of the instrument clean. Use a damp soft cloth to wipe off dust. Do not use corrosive detergents.
- The laser window and focusing mirror can be cleaned in the same manner as optical surfaces.
7. Troubleshooting
Refer to the table below for common error codes and their solutions:
| Message | Reason | Solution |
|---|---|---|
| Err16 | Signal error | Poor measurement conditions. Improve conditions (e.g., increase object reflectivity, reduce ambient light, reduce distance). |
| Err10 | Battery voltage is too low | Recharge the battery. |
| Err15 | Out of range | Ensure measurement is within the specified range. |
| Err26 | Miscalculation | Out of range, or wrong hook. Review measurement technique. |
8. Specifications
Key technical parameters for the REVASRI T2 Laser Tape Measure:
| Feature | Specification |
|---|---|
| Product Name | Laser Tape Measure |
| Brand Name | REVASRI |
| Model Number | T2 |
| Ruler Tape Specifications | 5m*19mm |
| Ruler Tape Accuracy | ±(0.3+0.2*L)mm (L is length in mm) |
| Ruler Tape Life | More than 3,000 times |
| Laser Measurement Range | 0.05m~40m |
| Measurement Accuracy | ±2mm (up to 10m), ±2mm ±50*10-6*D (over 10m) |
| Distance Units | m/in/"/ft |
| Laser Type | 650nm |
| Laser Rating | Class 2 (<1mW) |
| Single Measurement Time | Typical 0.7s, Max 3.5s |
| Working Temperature | 0~40 ℃ |
| Storage Temperature | -20~60 ℃ |
| Battery Type | 300mAh Lithium Battery (Included) |
| Operational Current | Less than 70mA (laser on, non-measurement mode) |
| Measurable Times per Charge | Not less than 3000 times |
| Weight (including battery) | 280.5g |
| Dimensions (L x W x H) | 85mm*55mm*78mm |
| Certification | CE, FCC, RoHS |
| Power Supply | Type-C Charging |
| Product Applications | Interior Design |
Note: Measurement range and accuracy may vary based on target surface, ambient light, and temperature conditions.
9. User Tips
- Understanding Reference Points: Always be aware of whether you are using front or rear reference measurement. This significantly impacts the displayed result. The rear reference includes the device's length in the measurement, while the front reference measures from the device's front edge.
- Switching Reference: To switch between front and rear reference, enter Storage Mode (display shows AEF), then short press the ▲ MEAS button for 3 seconds.
- Unit Conversion: Easily switch between meters, inches, feet and inches, and feet by long-pressing the ▣ button. This is useful for different project requirements.
- Optimal Measurement Conditions: For best accuracy, ensure the target surface is reflective, ambient light is not excessively bright, and the temperature is within the specified operating range.
- Tape Measure Lock: The self-locking tape design allows for easy extension and retraction. Press the unlock button to retract the tape smoothly.
10. Warranty and Support
10.1 Warranty Regulations
This product comes with a two-year warranty from the date of purchase. The warranty covers manufacturing defects under normal use. The warranty does not cover:
- Damage from disassembly or unauthorized modification.
- Damage from incorrect operation or human error.
- Damage caused by not using original accessories.
- Repairs performed by unauthorized personnel or units.
- Instruments with deleted serial numbers.
For warranty claims, the warranty card and proof of purchase (invoice) are required. Please contact your local dealer for repair or replacement services.
10.2 Additional Resources
A detailed user manual in PDF format is available for download: Download User Manual (PDF)
