The major application of solar energy are as follows: (a) Solar water pumping (b) Solar led lights (c) Solar distillation (d) Solar portable power (e) Solar drying of agricultural and animal products (f) Solar Carport (g) Solar battery (h) Solar electric power generation (i) Solar thermal power production (j) Solar green houses.
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W42VR Quick Details:
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Model
Archon New Model W42VR Diving Video Light
 Bulb
 White CREE XM-L2 U2 LED *8 (max 5200 Lumens);
    Red CREE XP-E N3 LED*4 wavelength 620 nm (max 400 Lumens);
    Purple LED *2 wavelength 410nm (max 6W);
    UV LED*2 wavelength 365nm (max 6W);
 Color temperature
 5000 K (white light)
 Reflector
 No hotspot design, no reflector
 Lens
 4mm Polycarbonate Board;
 Battery
 18650 rechargeable Li- ion battery *4;
 Battery Indicator
 100%-50%: Green; 50%-30%: Yellow; 30%-10%:
    Red; Below 10%: Red Flashing; Below 5%: switch off;
 Protection
 With battery over-discharging protection, polarity reversing
protection with gas release valve
W42VR Product Specifications:
1. Model: W42VR multifunction underwater photographing Light
2. Bulb: White CREE XM-L2 U2 LED *8 (max 5200 Lumens);
3. Red CREE XP-E N3 LED*4 wavelength 620 nm (max 400 Lumens);
Purple LED *2 wavelength 410nm (max 6W);
UV LED*2 wavelength 365nm (max 6W);
4. Switch 1: Red> Purple> UV> off
Switch 2: White high> White medium >White low> off
5. The two switches can be operated separately or simultaneously.
6. Runtime: White High Mode: 1.5H; White Medium Mode: 3.0H; White
Low Mode: 4.0H Red Light: 4.0H; Purple Light: 5.0H; UV light: 5.0H
8. Color temperature: 5000K (white light)
9. Reflector: No hotspot design, no reflector;
10. Lens: 4mm Polycarbonate Board;
11. Body material: Durable aircraft-grade aluminum;
12. Angle of light beam: 120°
13. Surface treatment: Premium Type III hard-anodizing.
14. Color: Black
15. Battery: 18650 rechargeable Li- ion battery *4;
16. Battery Indicator: 100%-50%: Green; 50%-30%: Yellow; 30%-10%:
Red; Below 10%: Red Flashing; Below 5%: Switch off;
17. With battery over-discharging protection, polarity reversing
18. Protection with gas release valve
19. Operation voltage: 2.8V to 4.2V;
20. Waterproof: 100 meters underwater
21. Dimensions: 140.9mm (length)* 62.6mm (dia. Of head);
22. Weight: 490 grams (without battery); 682.4 grams (with battery)
23. Underwater Weight: 330 grams (with battery)
24. Impact resistance: 1.5M.
MODES CHANGING:
1. Successive push the switch 1 ON-OFF within two seconds to cycleÂ
Through Red, Purple, UV Light, OFF;Â
2. Successive push the switch 2 ON-OFF within two seconds to cycleÂ
Through High, Medium, Low (white light), OFF.Â