| MODEL | DT-NS84 |
| IIT | Gen2+/Gen3 |
| Magnification | 4X |
| Resolution ( lp/mm) | 45-57 |
| Detection sensitivity（M） | 1500 |
| Distinguish distance（M） | 1000 |
| Lens system | F1: 1.4, F85mm |
| Aperture | 55mm |
| FOV（degree） | 11.5 |
| Distance of pupil | 50mm |
| Graduation type | Back Light red cursor |
| Minimum mil | 1/6MOA |
| Diopter range | +/-5 |
| Battery type | CR123(A)x1 |
| Battery life（H） | 40-50 |
| Range of focus（M） | 8--∞ |
| Operating Temperature （℃） | -40 /+60 |
| Relative humidity | 5%-98% |
| Impact resistance | >1000G |
| Environment rating | IP65（IP67 optional） |
| Dimensions（mm） | 257x92x90 |
| Weight（no battery） | 850g |
Rotate the battery cover anticlockwise, remove the battery cover (as shown in figure ① - 1), put one CR123 battery positive pole into the battery cartridge, and then align the negative pole of the battery cover with the battery negative pole of the battery cartridge (as shown in figure ① - 2).