Product features：
The DT-NH8xx night vision device is an ideal equipment for public security departments, armed police forces, special police forces, and guarding patrols.
Technical Specifications:
| MODEL |
DT-NH825 |
DT-NH835 |
| IIT |
Gen2+ |
Gen3 |
| Magnification |
5X |
5X |
| Resolution |
45-57 |
51-57 |
| Photocathode type |
S25 |
GaAs |
| S/N(db) |
15-21 |
18-25 |
| Luminous sensitivity(μa-lm) |
450-500 |
500-600 |
| MTTF（hrs） |
10,000 |
10,000 |
| FOV(deg) |
12+/-3 |
12+/-3 |
| Detection distance(m) |
580-650 |
650-700 |
| Graduation cursor |
Internal （optional） |
Internal （optional） |
| Diopter |
+5/-5 |
+5/-5 |
| Lens system |
F1.5 Ф65 FL=90 |
F1.5, Ф65 FL=90 |
| Coating |
Multilayer broadband coating |
Multilayer broadband coating |
| Range of focus |
10M--∞ |
10M--∞ |
| Auto anti strong light |
High Sensitivity, Ultra Fast, Broadband Detection |
High Sensitivity, Ultra Fast, Broadband Detection |
| rollover detection |
Solid non-contact automatic detection |
Solid non-contact automatic detection |
| Dimensions (mm) (without eye mask) |
220x72x65 |
220x72x65 |
| Material |
Aviation Aluminum Alloy |
Aviation Aluminum Alloy |
| Weight (g) |
535 |
535 |
| Power supply (volt) |
2.6-4.2V |
2.6-4.2V |
| Battery type (V) |
CR123A(1) |
CR123A(1) |
| Battery life (hours) |
80(W/O IR) 40(W/IR) |
0(W/O IR) 40(W/IR) |
| Operating temperature (C |
-40/+50 |
-40/+50 |
| Relative humidity |
5%-98% |
5%-98% |
| Environment rating |
IP65（IP67 Optional） |
IP65（IP67 Optional） |