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2 build-in 18650 Li-ion batteries of this product are not allowed to be removed by 
users. Otherwise we will not responsible for this kind of repair. 

Safety of Li-ion Battery: 

     Please charge the battery pack with the specified charger. Fire hazard may 
     be caused by improper charger using. 
     When the battery pack is not in use, keep it away from metal objects (such as: 
     paper clips, coins, keys and nails) to prevent two ends’ connection, which 
     may cause burning or fire hazard. 
     Avoid contact or eye contact with the batteries’ liquid leakage, which corrodes 
     and burns. Flush with water in time if you touch it. Immediately go to hospital 
     for medical treatment in case of eye contact. 
     Do not use the damaged or modified battery pack to prevent unpredictable 
     results. Unauthorized repair for battery pack is not allowed. Please send it 
     to manufacturer or authorized service provider. 
     Do not expose the batteries to the fire or high temperature over 130°C to 
     prevent explosion.
     Please charge in 24 hours when the battery is low or the laser is shut down 
     by low power. 
     Optimal charging temperature: 0°C-20°C (32°F-68°F)

Device Installation

Place the meter on flat ground, lifting platform or fix it on a tripod. Make sure the 
bottom screw is tightened to prevent the device dropping from the tripod. 

Battery Installation

The product comes with a 3.7V 4000mAh li-ion battery pack, please install the 
battery pack correctly to the groove. 

Leveling 

Before use, please level the device by the leveling bubble on the top. The laser 
tube will blink and the buzzer beeps if the leveling range is exceeded. 

Battery Charging

The blue battery indicators will display the battery status: 25%-50%-75%-100%. 
The remaining battery capacity is 25% or less when only the leftmost indicator 
is on. Please charge the battery in time, otherwise when the battery is low, the 
indicator of leveling bubble will blink and the laser darkens. 

Take out the battery pack, insert the charging wire and the adapter into it. Charging 
starts when the indicators blink. Charging is completed when 4 indicators are 
keeped on. Then the charging wire should be unplugged. After the battery pack 
cooling down, install it on the device. 

Laser Function

     Turn the power switch to ON, the horizontal laser will be enabled and can be 
adjusted by H/V button. At this point, short press the V button to enable V1, 
V3 and lower reference point, press the V button again to enable V2 and V4. 
The buzzer alarm will be triggered if the leveling angle of 3.5° is exceeded. 
Turn the power switch to OFF to turn off the device. 

     In power-off state, long press H/V button for 3s to enter the lock mode (diagonal 
function), the button indicator will be on, adjust the laser line by H/V button. 
At this point, short press the V button to enable V1, V3 and lower reference 
point, press the V button again to enable V2 and V4. Short the H/V button to 
turn off the lock mode. 

Short press the OUTDOOR button to enter pulse mode. 

4. Battery Charging and Safety Instructions

5. Operation Guideline

Laser Level English Manual

Laser Level English Manual

Summary of Contents for LM520G-LD

Page 1: ...P N 110401109493X LM520G LD LM530G LD LM550G LD Laser Level English Manual ...

Page 2: ...ees that the product is free from any defect in material and workmanship within one year from the purchase date This warranty does not apply to damages caused by accident negligence misuse modification contamination or improper handling The dealer shall not be entitled to give any other warranty on behalf of Uni Trend If you need warranty service within the warranty period please contact your sell...

Page 3: ...ptical instrument Do not set the meter at a visual height to avoid injury caused by exposing eyes to laser beam Do not disassemble or modify the laser meter in any way No inner parts can be repaired by users Unauthorized modifications may emit harmful laser radiation Please send the meter to professional maintenance personnel Keep the laser meter away from children or serious injury may occur Clas...

Page 4: ...eling Before use please level the device by the leveling bubble on the top The laser tube will blink and the buzzer beeps if the leveling range is exceeded Battery Charging The blue battery indicators will display the battery status 25 50 75 100 The remaining battery capacity is 25 or less when only the leftmost indicator is on Please charge the battery in time otherwise when the battery is low th...

Page 5: ...row the battery into fire these actions may cause dangerous accidents Do not use old and new batteries simultaneously Be sure to replace all of them with the same type of batteries in same brand Keep the battery out of the reach of children Do not expose the meter to sunlight or high temperatures The meter shell and some parts are made of plastic which may be damaged in high temperature environmen...

Page 6: ...The contents of this manual are subject to change without prior notice 10 9 Laser Level English Manual ...

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