// SYSTEM ALERT // SYSTEM ALERT // WARNING // WARNING //
!!! THIS FLASHLIGHT DOES NOT COME WITH A CHARGER OR A BATTERY !!!
IF YOU DO NOT OWN THE PROPER BATTERY AND AN EXTERNAL CHARGER, YOU WILL NEED ONE.
Convoy - M21A UV 365nm 21700 Flashlight with SBT-10X-UV
The Convoy M21A UV 365nm is a single-emitter 21700 UV inspection light built around the Luminus SBT-10X-UV — a purpose-made 365nm UV-A LED — with a ZWB2 filter installed standard to block visible leakage and pass true ultraviolet.
Host, driver and emitter, laid out plainly: the M21A is Convoy's larger 21700 platform (44.5mm head, 155.8mm long, 168g), the driver runs 3 modes — 5% / 30% / 100% — up to 3000mA, and the SBT-10X-UV is Luminus's Gen5 UVX-technology chip, datasheet-rated for a 367nm typical peak wavelength on the 365nm bin.
This flashlight does NOT have USB charging — remove the battery to charge it externally.
What 365nm UV Is Good For
- Mineral & fossil fluorescence inspection
- Scorpion hunting
- Leak detection with UV-reactive dyes
- Charging glow-in-the-dark and phosphorescent materials
- Currency and document authentication
Good to Know Before You Buy
- Requires 1x unprotected 21700 lithium battery, not included. No onboard charging.
- Convoy's driver runs the emitter up to 3000mA — above the SBT-10X-UV's datasheet-rated 2.5A continuous maximum for this wavelength bin, so treat maximum-mode output as strong but not a guaranteed sustained figure.
- 365nm UV-A at this output is an eye and skin hazard — never point it at eyes or skin, and UV-blocking eyewear is recommended for extended use.
Specs
| Radiant Flux | ~1600 mW typ at 1.0A test current (Luminus datasheet); rises with drive current - see Driver Current Note |
|---|---|
| Peak Wavelength | 367 nm typ (365-375 nm bin) |
| ZWB2 Filter | Yes, installed standard |
| Battery Format | 1 x 21700 lithium, unprotected |
| Battery Included | No |
| Charging Port | none |
| Length | 155.8 mm |
| Head Diameter | 44.5 mm |
| Body Diameter | 27.3 mm |
| Tail Diameter | 31.3 mm |
| Weight (no cell) | 168 g |
| Material | Aluminum alloy |
| Modes | 3 (5% / 30% / 100%) |
| Reflector | Smooth |
| Lens | ZWB2 filter glass - serves as the lens |
| Mode Memory | Yes |
| Tailstands | Yes |
| Driver Current Note | Convoy specs the driver up to 3000mA, above the SBT-10X-UV's datasheet-rated 2.5A continuous maximum for the 365nm bin - treat 100% mode output as strong but not a guaranteed sustained manufacturer figure. |
| Special Features | Low-voltage warning; reverse-polarity protection; temperature-protection management in the driver; no onboard charging. HAZARD: 365nm UV-A at this output is an eye/skin hazard - avoid direct exposure, UV-blocking eyewear recommended for extended use. |
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