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Safety Regulations Please read the safety regulations and operation guide carefully before operating.

Please read all of the operational guide and safety regulations in this manual before operation. Improper operations without complying with this manual may cause damage to the device, influence on measurement result or cause personal injury to the user or a third party.
The instrument is not allowed to disassemble or repair in any ways. It is forbidden to do any illegal modification or performance change for laser emitter. Please keep it out of reach of children and avoid being used by any irrelevant person.
It is strictly prohibited to shoot eyes or other parts of body with the laser. It is not allowed to take the laser to shoot the surface of any highly reflective objects.
Due to electromagnetic radiation interference to other equipment and devices, please don't use the meter in the plane or around medical equipment, don't use it in inflammable or explosive environment.
Discarded meter device should not be processed just like household garbage, please handle it in line with related law and regulations.
If there are any quality problems with the instrument or any questions about the use of the instrument, please contact Iocal distributors or manufacturer in time, we are ready to offer solutions for you.

Display

Lithium Battery

The built-in 3.7V 600mAh lithium battery is nonremovable. The instrument has its own charging circuit, with clear undervoltage indication and charging indication.
: Battery charging: Please use a DC5V>1A charger with safety certification. A mobile phone charger is recommended.
. The instrument shall be charged in time when running out of battery or its battery symbol shows blank and flashes due to insufficient battery capacity. Insert USB to charge, and the battery symbol scrolls to display . When fully charged, will display and flash.

Battery Maintenance

Keep the product with full charge if no operations for a Iong time, and charge it once every half a year to avoid battery damage from discharge.

Start the Instrument/Menu Setting

Turn On/Off the Instrument

Under Off state, short press READ the device enters the test mode.

Under On state, long press OFF to turn the device off. CLEAR
The device will automatically shut down without any
operation within 150 seconds.

Unit Setting

Short press UNIT to enter the unit switching state. The factory default unit is: 0.oo0m. There are 6 units for selection.

Reference Point Setting

Long press to switch among front-end reference, middle-end reference and end reference.

Backlight On/Off

The backlight will automatically turn on and off. The backlight can be on for 15s while operating, and it will be off automatically after 15s if there is no operation to save power.

Sound On/Off

Press and hold to switch among Chinese broadcast, English broadcast, or turning off sound.

(Notes: The device do not broadcast voice while charging in order to reduce power consumption)

Self-Calibration

In order to ensure the accuracy of the device, self-calibration function is provided.

Calibration method: In the shutdown state, hold down OFF CLEAR then press READ to power on. Release READ until the screen displays flashy number at the lower end of ' cRL', then the device enters the self-calibration mode. Then user can adjust the value with + - according to the accuracy of the device.

Adjusting range: -9 to 9mm.

For example, the actual distance is 3.780m.

If the measured value is 3.778m, 2mm smaller than the actual value, the calibration value can be adjusted up by 2mm on the existing basis with + through the calibration function.

If the measured value is 3.783m, 3mm higher than the actual value, the calibration value can be lowered by 3mm on the existing basis with through the calibration function.

After the adjustment, press READ to save the calibration result.

Single Distance Measurement

The steps are as follows:

1. In the measurement mode, press READ and the instrument Iaser will be emitted. 2. Lock the measurement target, press READ the instrument measures the distance once, and it is displayed in the main display area. In the auxiliary display area, the historical data of the last three measurements will be displayed, which can be cleared by pressing R.

Continuous Measurement

This mode is convenient for users to find a certain distance point. Without frequent pressing, you can get the required data. The steps are as follows:

1. In the measurement mode, long press READ the instrument will enter the continuous measurement mode, the screen will display the maximum value MAX, minimum value MIN and the maximum and minimum difference, and the main display area will display the current measurement value.
2. Short press any button to exit continuous measurement mode.

After the measurement stops, the measurement results are automatically saved to the storage media for easy access at any time.

Area Measurement

Press t, shows on the screen. One of the side of rectangle blinking on the display. Follow the prompts to complete the following:

Press READ to measure the first side (length); Press READ to measure the second side (width); The instrument automatically performs area and perimeter calculations, and the results are displayed in the main display area. The auxiliary display area displays the length and width of the rectangle as well as the perimeter values.

In the measurement process, user can also press CLEAR to clear the measurement result and measure again. Press twice to exit the area measurement state and enter the Iength measurement mode.

Volume Measurement

Press l twice, Jshows on the screen. One of the side of cube blinking on the display. Follow the prompts to complete the following:

Press to measure the first side (length);
Press READ to measure the second side (width);
Press to measure the third side (height);
The instrument automatically performs volume calculations and the results are displayed in the main display area. The auxiliary display area displays measurements of the length, width and height of the cube.
In the measurement process, user can also press CLER to clear the measurement result and measure again. Press CLEAR twice to exit the volume measurement state and enter the length measurement mode.

Wall Area Measurement

Short press I three times, the screen displays , and one side of the wall is blinking. Follow the prompts to complete the following:

Press READ to measure the height of the wall first; Press READ to measure the width 1 of the wall 1, and the instrument automatically calculates the area of the wall \mathbf { \tau } = \mathbf { \tau } height x width 1;

Press to measure the width 2 of wall 2, and the instrument calculates the total area of the walls automatically;
Sum of areas \mathbf { \tau } = \mathbf { \tau } height (width \harpoonleft width 2);
By analogy, press \* to measure the width n of the wall n;
Sum of areas \mathbf { \tau } = \mathbf { \tau } Height x (width \ L _ { 1 + } width { 2 \mathord { + } } \ldots { } { \mathord { \left. \kern - \nulldelimiterspace \right.} { 2 } + / { } { } \ldots { } } width n);

During the measurement process, user can short press to clear the measurement result and measure again. Press CEAR twice to exit the wall area measurement state and enter the length measurement mode.

Pythagorean Measurement

There are four modes of measuring the triangular unilateral distance by means of Pythagorean theorem, which are convenient for users to measure indirectly in specific complex environments.

Angle and Height Measurement.

Short press four times, shows on the screen, and the hypotenuse of the triangle flashes
Press READ according to the screen prompt first measure the length of the hypotenuse of the right Angle of the dotted line (a) and measure the Angle between the hypotenuse and the bottom edge.
The device automatically calculates the horizontal distance (b) and vertical height (h) .

Calculate the hypotenuse by measuring the length of two sides.

Short press - five times, shows on the screen, the right side of the triangle flashes

Press READ to measure the length of the right Angle of a dotted line according to the screen prompt (a)

Press READ to measure the length of the right side of the
other dotted line (b)
The device automatically calculates the length of
hypotenuse (x)

Measure the three dotted edges of the triangle, and indirectly measure the length of one side of the triangle.

Press six times, shows on the screen, the hypotenuse of the triangle flashes

Press READ to measure the length of the hypotenuse of a dotted line (a).

Press READ to measure the length of the hypotenuse of a dotted line in the middle (b).

Press READ to measure the length of the bottom of the other dotted line (c).

The device automatically calculates the length of one side of the solid triangle (x).

4 Measure the three dotted edges of the triangle, and indirectly measure the length of one side of the triangle.

Press seven times, shows on the screen, the hypotenuse of the triangle flashes

Press READ to measure the length of the hypotenuse of a dotted line (a).

Press READ to measure the length of the dotted line as shown (b).

Press READ to measure the length of the hypotenuse of the other dotted line in the picture (c).

The device automatically calculates the length of the right Angle side of the solid line ( x ) .

In the Pythagorean Measurement Mode, the right Angle side must be less than the hypotenuse length of the instrument to calculate, otherwise the instrument will display an error signal prompt. In the Pythagorean Measurement Mode, to ensure the accuracy of the measurement, it is necessary to ensure that the measurement is taken from the same starting point and in the order of the hypotenuse and right Angle side measurements.

Addition / Subtraction Measurement

Single distance measurement can be added or subtracted by adding/subtracting operations.

After measuring a single distance, the user can press +- to enter the cumulative addition/subtraction. Press +, when "+" appears on the screen, the user enters the cumulative addition measurement mode and the screen displays the summation value of the last measurement value and the current measurement value

Press , When "-" appears on the screen, the system enters the cumulative subtraction measurement mode. The screen displays the difference between the last measurement and the current measurement.

Not only distance can be calculated in addition and subtraction, but area and volume can do the calcuIation as well. Take area as sample:

Area cumulative function:

1. Measure the first area as shown in PIC1.
2. Short press +, and enter the cumulative addition mode, then measure the second area as shown in PiC2,
3. Short press uir to get the summation result of these two areas which is showing in PIC3.

Multiple Area Addition:

After the area accumulation step 2 operation, continue the measurement, you can add the next area again, repeat this step, you can do multiple accumulations, and finally perform the sum step 3.

Multiple Area Subtraction:

Press to switch the cumulative subtraction mode. The cumulative subtraction and multiple cumulative subtraction operations are similar to cumulative addition operations. For details, see Cumulative Operations.

Record Function

In measurement mode, when the current data is valid, the instrument will automatically store it in memory, and the record number ( ssJ at the top of the screen will continuously add up.

In the area, volume, triangle indirect measurement mode, it can also be stored when all the tests are completed, at which time the instrument will save the complete record of the measurement in that measurement mode.

Read / Delete the Record:

Operation is as follows:

Press to view the records
Press + to switch records
Press CLEAR or READ to exit the record
Hold down OFF to delete a single record CLEAR
Hold down OFF and at the same time to delete all CLEAR
the records

Angle Measurement

The angle information is displayed at the top of the screen, and the angle measurement range is - 9 0 . 0 ^ { \circ } to 9 0 . 0 ^ { \circ }

Error Information

When Err x information appears on the instrument, it indicates that the instrument may not be able to perform correct measurement. The following are possible error information and solutions.

Ranging Parameters

Tape Parameters

Other Parameters

Note: \* "d" indicates the actual distance.

① In harsh environment, such as: sunlight is too strong, the ambient temperature fluctuates excessively, the reflection effect of the object's surface is weak and the battery is low, the measurement results will have a large error. Please use the target reflector to assist the measurement. ② Battery working time/times, is subject to laboratory test results.

Instrument Maintenance

Do not store the instrument in a high temperature and humidity environment for a long time. If the instrument is not used for a long time, please put it in the pouch and store it in a cool and dry place.

Please keep the device surface clean. Use a soft wet cloth to wipe the dust on the surface. Do not use corrosive liquid to clean the device. The laser window and focusing lens can be wiped in the same way as the optical device surface.

Packing List

Please check if the accessories are completed according to the below list.

i\* i s #3)Axl RaJ Sndway Technology (Guangdong) Co., LTD.

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Add: No.58, Humen Tuanjie Road, Humen Town,
Dongguan City, Guangdong Province, China
i# / Service Hotline: 400-125-6969
i /Tel: 0769-85265688
t / Web: www.sndway.com
\* /E-mail: market@sndway.com