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| 1V | 2V | 4V | |
| Number of vertical lsaer tube | 1 | 2 | 4 |
| Number of horizontal lsaer tube | 1 | 1 | 1 |
| Number of bottom lsaer tube | \ | 1 | 1 |
| Wavelength | 635nm | 635nm | 635nm |
| Auto-leveing range | <3° | <3° | <3° |
| Accuracy | ≤±1mm/5m | ≤±1mm/5m | ≤±1mm/5m |
| Accuracy of bottom point | \ | ≤±1.5mm/1m | ≤±1.5mm/1m |
| Accuracy of top line | ≤±1mm/3m | ≤±1mm/3m | ≤±1mm/3m |
| Beam width | ≤3mm/5m | ≤3mm/5m | ≤3mm/5m |
| Working temperature | -10℃~40℃ | -10℃~40℃ | -10℃~40℃ |
| Projecting fan angle | ≥120° | ≥120° | ≥120° |
| Marking radius | 10m | 10m | 10m |
| Power | 3 dry batteries / external power supply | 3 dry batteries / external power supply | 3 dry batteries / external power supply |

Q Why would I choose your product?
1. we are Alibaba Assessed 1 years Supplier.
2. 100% QC inspection before shipping, competitive price.
3. We have our own production plant and after-sales service is guaranteed.
Q What about the after-sales service?
Our company is responsible for the supplied product within its usage life.
Q What about the samples?
We can supply samples. But we should charge the sample fee. And we will return after order confirmed.
Q Can you help me design or modified the products as we request?
We have a R&D capability and professional & efficient team, so custom service and OEM/ODM are welcomed.
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