I am monitoring price and it is for $34.99 now (in Banggood). Updated: 19-01-2026.
UNI-T UT691B Fiber Optic Engineering Pen 30mW Red Light Source Wide Power Range Accurate Multi Wavelength Calibration Portable Testing Tool – UT691B-30C
Banggood warehouse: China.
Price: $34.99
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Aliexpress
There’re some similar (or not) items on Aliexpress
| Image | Product (link) | Price |
|---|---|---|
 |
UNI-T UT691B-30C/UT691B-30T 2-in-1 Fiber Optic Engineering Pen | Optical Power Meter + 30mW Red Light Fault Point Detector | $35.98 |
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Price history and price alert
Not enough data to show price history chart… $34.99 is the only recorded price. It was not cheaper than that since we have saved it in DB.
You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).