MILESEEY DP20 PRO Series Laser Distance Meter
User's Guide / Quick Start
Product Overview
Thank you for purchasing the Mileseey Laser distance meter. Please read the user manual carefully before operation.
The DP20 PRO series is an exquisite bilateral laser distance measurer whose exterior redefines the concept of design. The cleverly designed buttons render an appearance as simple as a ruler. With built-in upgraded and patented distance-measuring technology that enable more accurate data of measurement, it meets various measurement needs of people engaged in house renovation, house decoration, interior design, exhibition design, outdoor advertising design, crafting, home soft furnishing, and more.
Made of aviation aluminum alloy, the DP20 PRO series is characterized by its elegance, smoothness, and durability. The user-favored multiple buttons with a logical layout enable quick and easy operation. The HD back-lit OLED display illuminates numbers and signs with a distinct resolution. The digital angle sensor allows real-time reading of the measurement angle and easy horizontal alignment. Thanks to the built-in large capacity 1000mAh rechargeable Li-ion battery, the DP20 PRO series is a more eco-friendly device with a long lifespan.
The DP20 PRO series offers an expansive collection of functions: real-time angle display, single measurement, continuous measurement, area measurement, volume measurement, auto level distance calculation, and auto height finding. The DP20 PRO supports both unilateral and bilateral measurements. The bilateral measurement overcomes restrictions of irregular spatial structures, enabling exceptionally efficient and precise distance calculation under complex spatial conditions. The smallest unit the device is capable of measuring is 0.001m, and the longest measurement range is up to 120m (390ft) in the two-way mode of measuring. The DP20 PRO series provides an outstanding measuring experience with the best quality and performance!
⚠️ Safety Instructions
In order to use this product safely, please read the following instructions carefully.
⚠️ Warnings and Responsibility
Warning
- The device is categorized into Class 2 laser product. DO NOT stare at the laser directly or shoot at others, as it will cause damage to eyes.
- The product is in accordance with strict standards and regulations in terms of development and manufacturing, but it cannot entirely exclude possible interference to other digital devices, and may cause discomfort to human and animals.
- ❌ Please DO NOT use this product under explosive or corrosive environment.
- ❌ Please DO NOT use this product near medical devices.
- ❌ Please DO NOT use this product on the plane.
Disposal:
Everyone is responsible for environmental protection! It is prohibited to dispose of used batteries together with household waste; please collect used batteries at designated waste stations. This product must not be recycled with household waste. Please dispose of the product appropriately in accordance with the national regulations in your country.
(Translated from French: You are responsible for returning all used electrical and electronic equipment to corresponding collection points. For more information: www.quefairedemesdechets.fr. This device and its batteries are recyclable. To be deposited in store OR to be deposited at a recycling center. Collection points at www.quefairedemesdechets.fr. Prioritize repairing or donating your device!)
Range of Responsibility:
Mileseey will not be responsible for damages caused by improper use, including:
- Using the product without referring to the instruction.
- Use of parts from other manufacturers without approval from Mileseey.
- Carrying out modification or conversion of the product.
Lithium Battery Charging Instructions:
This product is built with a Lithium rechargeable battery. Please use the original USB cable to charge by connecting to a power outlet or computer.
Warning: The laser distance meter may heat up when charging, and this is normal. It has no effect on the device performance and service life. If it is not used for a long time, unplug the charger.
Product Appearance
A schematic of the laser distance meter showing the front and top views. It labels the laser emitting/receiving lenses, laser marking lens, USB port, display, and various buttons:
- 1. Right Laser On/Off Button: Short press to switch to the right side laser; short press again to retrieve two-way laser emission. Short press to page down to historical data.
- 2. Middle Laser Line On/Off Button: Short press to turn on/off the middle laser line as a clear visible reference for precise alignment.
- 3. Left Laser On/Off Button: Short press to switch to the left side laser; short press again to retrieve two-way laser emission. Short press to page up historical data.
- 4. Off/Clear Button: Long press to turn off the device. Short press to clear the previous operation or return.
- 5. Units Switch/Mute Button: Short press to switch units (m/ft/in/''). Long press to turn on/off beep tone.
- 6. Mode Button: Short press to switch between measurement functions: single measurement, area measurement, volume measurement, auto level distance measuring, and auto height finding.
- 7. Line segmentation & measuring: Short press to enter segmentation mode. In segmentation mode, short press to set segmenting value from 1/2 to 1/16.
- 8. Big Text Display: Short press to switch to Big Text display. Long press to turn on/off Bluetooth (Only available on DP20 Pro Version).
- 9. On/Measure Button: In off state, long press to turn on. Short press to measure. In on state, long press to enter continuous measurement.
- 10. Memory Button: Short press to save the data. Long press to enter history data saved.
Illustrations show a lanyard hole and a 1/4-inch screw hole for tripod mounting.
Technical Specifications
| Parameter | DP20 | DP20 PRO |
|---|---|---|
| Range 1 (M) | 0.25~80m | 0.25~120m |
| Accuracy 2 (MM) | ±(2.0mm+5x10-5D) | |
| One way Available Range:(m) | 0.25~40m | 0.25~60m |
| Two-way Measure | ✔ | ✔ |
| One-way Measure | ✔ | ✔ |
| Segmentation (1/N Length) | ✔ | ✔ |
| Middle Laser Mark Beam | ✔ | ✔ |
| Bluetooth | ✖ | ✔ |
| Single Measurement | ✔ | ✔ |
| Continuous Measurement | ✔ | ✔ |
| Area | ✔ | ✔ |
| Volume | ✔ | ✔ |
| Auto level distance finding | ✔ | ✔ |
| Auto height finding | ✔ | ✔ |
| Angle sensor | ✔ | ✔ |
| Extra-large Display Mode | ✔ | ✔ |
| Screen Display | OLED | OLED |
| Memory | 20sets | 20sets |
| Two-way measurement reference | Middle laser line | Middle laser line |
| One-way measurement reference | 1.Left end | 1.Left end |
| 2.Middle laser line | 2.Middle laser line | |
| 3.Right end | 3.Right end | |
| Units | m/ft/in/ft+in | |
| Auto Power Switch-off | After 180s of inactivity | |
| Laser Class | Class 2 | |
| Laser Type | 630-670nm, <1mW | |
| Battery Type | 1000mAh rechargeable Li-ion battery | |
| Operating Temperature | 0°C~+40°C (32°F~+104°F) | |
| Dimension(mm) | 160*42*20.5mm | |
| Weight (g) | 150g | |
Notes:
- 1. Range: Range data are referenced to the rear of the measurer. The Maximum range shall be different according to different modes. Please refer to the package for actual range.
- 2. Accuracy: If measuring under favorable conditions, such as smooth surface, proper temperature, and indoor lighting, the device is able to work within a certain range as indicated. If measuring under unfavorable conditions, such as strong light, uneven surface, and improper temperature, possible measurement error might be produced.
Tip: In case of poor sunlight and bad reflection of the object, please use the target plate or reflector.
Operation Instructions
Measurement Reference
When initially turned on, the device defaults to the single measurement mode in both directions. Short press ◀️ to switch to the left laser and short press ▶️ to switch to the right laser.
For bilateral lasers, the measurer defaults to only use the middle laser as the reference.
For one-way measurement, the measurer offers three references to meet different measuring needs. Short press the ⬆️ button to switch to left end, middle laser line, and right end reference.
Note: After rebooting, the reference setting in the last booting remains saved.
Two-way Measurement
Press the ⚙️ (MODE) button to enter Two-way single measurement mode (↔️). Press the measure button (✅) after aiming at targets to get distances. The left side length, right side length, and total length are displayed on the screen.
Diagram: Shows the device emitting lasers from both sides towards two targets, with lines indicating left side length, right side length, and total length.
Screen Display Example: Shows values like 20.334m, 8.232m, and 28.566m, labeled as Left Side Data, Right Side Date, and Total Length.
One-way Measurement
In the mode of two-way single measurement (↔️), short press ◀️ button to switch to the left side distance measuring laser, or short press ▶️ button to switch to the right side distance measuring laser, which switches two-way to one-way mode. Press the measure button (✅) after aiming at the target to get distance.
Diagram: Shows the device emitting a single laser beam towards a target.
Screen Display Example: Shows values like 31.279m and 24.6°, labeled as Reference, Measured Data, and Angle.
Continuous Measurement
Long press the ✅ (MEAS ON) button to enter continuous measurement. The device begins to continuously measure. Short press the ✅ (MEAS ON) button to stop the continuous measurement; then the screen displays the current maximum and minimum values.
Diagram: Shows the device emitting multiple laser beams.
Screen Display Example: Shows values like 20.334m labeled as Min. and Max.
Line Segmentation & Measuring
Long press the 1/N button to enter line segmentation & measuring mode (?); short press the 1/N button or +/- buttons to set the stake out value from 1/2 to 1/16. The measured values move left or right with indicated arrows. When moving to the target position, the N/N segment appears at the bottom middle of the screen, indicating an approach to the target position. When ⚫ flashes and ticks at the top centre of the screen, this indicates that the target position has been reached. Press the ✅ (MEAS ON) button to lock the current position.
Diagram: Shows a wall with laser lines marking segments, indicating values like 3/6, 5/6.
Screen Display Example: Shows values like 6.000, 6.000, and 3/6, labeled as Laser Marking Icon, Left/Right Values, and N/N.
Area Measurement
Press the ⚙️ (MODE) button to select Area Measurement Mode (⬜); then press the ✅ (MEAS ON) to confirm. According to the flashing line prompt, press the ✅ (MEAS ON) button to get the distance of the first line (Length), and press the ✅ (MEAS ON) again to get the distance of the second line (Width); then the area value is displayed on the screen.
Note: Press ◀️/▶️ to cycle through the length, width, and circumference values.
Diagram: Shows two perpendicular lines being measured for area calculation.
Screen Display Example: Shows values like 6.782m and 31.279m², labeled as Reference (The Length of Second Line/Width) and Area.
Volume Measurement
Press the ⚙️ (MODE) button to select Volume Measurement Mode (?); then press the ✅ (MEAS ON) to confirm. According to the flashing line prompt, press the ✅ (MEAS ON) button to get the distance of the first line (Length), and press the ✅ (MEAS ON) to get the distance of the second line (Width), then press the ✅ (MEAS ON) again to get the distance of the third line (Height); then the volume value is displayed on the screen.
Note: Press ◀️/▶️ to cycle through the length, width, and height measurement values.
Diagram: Shows three perpendicular lines (Length, Width, Height) for volume calculation.
Screen Display Example: Shows values like 3.222m and 41.857m³, labeled as Reference (The Length of Third Line/Height) and Volume.
Auto Level
Press the ⚙️ (MODE) button to select Auto Level Measurement Mode (?); then press ✅ (MEAS ON) to confirm. According to the flashing line prompt, press the ✅ (MEAS ON) button to measure, and the hypotenuse length will be displayed on the screen, and then the horizontal distance will be calculated, and the tilt angle will also be displayed on the screen.
Note: Press ◀️/▶️ to cycle through the tilt angle, the hypotenuse length, and the horizontal distance.
Diagram: Shows a tilted line, indicating the calculation of horizontal distance and angle (α).
Auto Height
Press the ⚙️ (MODE) button to select Auto Height Measurement Mode (⬆️); then press ✅ (MEAS ON) to confirm. According to the flashing line prompt, press the ✅ (MEAS ON) button to get the length of the first line, and press the ✅ (MEAS ON) again to get the length of the second line; then the vertical distance between the two points will be displayed on the screen.
Notes:
- 1. The auto height function can only be used in one-way laser measurement.
- 2. Press ◀️/▶️ to cycle through the angle between two lines, the length of the first line, and the length of the second line.
Diagram: Shows two points and lines representing the first and second measurements for auto height calculation.
Screen Display Example: Shows values like 24.6° and 2.235m, labeled as Reference, Angle, and Vertical Height.
Memory
Short press ? (MEMORY) button to save the current data. Long press ? (MEMORY) to enter the memory; press ◀️/▶️ to turn on the previous and next page, and press ⬆️ button to go through the current history of measurement sides or angles; then press ❌ (CLEAR/OFF) button to exit the history. The saved measurement result data will be displayed from the most recent time to the furthest time.
Note: 20 sets of measurement results can be saved.
Advanced Features
Big Text Display Mode
Short press the T/T button to switch into Big Text Display Mode, and press the T/T button again to exit the extra-large display mode.
Note: The extra-large display mode can only be applied in a single measurement.
Screen Display Example: Shows a large value like 45.588m.
Bluetooth Connection (Only available on DP20pro Version)
Measuring Device: Long press the “Big Text” button (T/T), and if the Bluetooth connectivity icon (?) appears without a cross, it means the Bluetooth is successfully turned on. If it appears with a cross, it means the Bluetooth is turned off.
Smart Phone End: Turn on the Bluetooth on your phone, then open the “Smart Life” App on your phone and click “add device”. Usually, the app will automatically add the laser measure. You will then see the sketching app is successfully connected to the laser measure.
There is real-time data synchronization between the laser measure and the app, which means when you acquire a measured data, it will be automatically transferred to the app.
Note: 1. As the Bluetooth function involves the use of a sketching app, users need to download the "Smart Life" App in advance.
APP Download and Error Codes
Erase Bluetooth Setting (DP20 Pro):
Upon startup, long-press the CLEAR/OFF button plus the T/T button simultaneously, and the device will power off after successful erasure.
APP Download:
- Step 1: Scan code - Use your phone to scan the QR code provided.
- Step 2: Jump to the App Market - Access Google Play or the App Store.
- Step 3: Search and install "Smart Life" - Find and download the application.
- Step 4: Open the APP to connect the device - Follow on-screen instructions to pair with the laser measure.
Diagrams illustrate each step of the app download and connection process.
Error Codes:
All errors or failures will be shown as codes. The following table explains the meaning of codes and solutions.
| Code | Cause | Corrective Measure |
|---|---|---|
| 204 | Calculation error | Refer to user manual, repeat the procedures. |
| 208 | Excessive current | Please contact your distributor. |
| 220 | Low battery | Replace batteries or charge the batteries. |
| 255 | Received signal too weak or measuring time too long | Change target surface. |
| 256 | Received signal too strong | Change target surface. |
| 261 | Out of the range of measurement | Select the measurement-distance within the range of measurement. |
| 500 | Hardware error | Switch the device on/off several times. If the symbol still appears, please contact your dealer for assistance. |
Copyrights, Contact Information, and Warranty
Copyrights
The product specifications are subject to change without notice, and all final interpretation rights are reserved by Mileseey Technology Co., Ltd. All trademarks, product images, and technical parameters are properties of Mileseey Technology Co., Ltd., and all rights are reserved.
Contact us
Mileseey technology(US) Inc.
Add: Office Add: 2995 East Sunset Rd Unit d115 Las Vegas NV 89120
Website: www.mileseey.net
Store: www.mileseeytools.com
E-mail: service@mileseey.com
Made in China
MILESEEY has started researching, developing, and manufacturing quality optical products including laser distance measures, laser levels, golf rangefinders, and binoculars since 2009. Focusing on development, researching, and manufacturing for over 12 years, Mileseey strives to provide premium qualified products and satisfying customer service to make your life easier and smarter.
Warranty
30-Day return and refund guarantee, 12-Month warranty, lifetime technique support by MILESEEY. Please feel free to reach us with any concerns. Email: service@mileseey.com. We strive to reply to you within 24 hours.
Legal Compliance
FCC Statement:
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:
- This device may not cause harmful interference, and
- This device must accept any interference received, including interference that may cause undesired operation.
NOTE: 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.
MODIFICATION: Any changes or modifications not expressly approved by the grantee of this device could void the user's authority to operate the device.
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