Thorlabs - LED341W 340 nm LED with Window, 0.33 mW, TO-39
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UV Energy Meter UV Radiometer For UV LED Light Source Detection 340nm to 420nm 763659578497 | eBay
Mightex Deep UV 255-340 nm Collimated LED Sources
LS128 Linshang UV Energy Meter UV Power Puck Integrator with Power Temperature Curve Energy for 340nm to 420nm UV LED UV Curing: Amazon.com: Industrial & Scientific