The first and last VFL in this picture are also marked as 30mW and are sold. But you can clearly see that they are much darker than the middle two. 3rd from left of this purchase. Unless it breaks very quickly I am very happy with my purchase and will be buying more.
Digital multimeter RGK DM-12
6 Review
π‘οΈ Continuous Temperature Monitoring with Relative Humidity Integration
4 Review
π Enhanced Precision with Backlit Professional Manometer for Differential Ventilation
6 Review
π¬οΈ Advanced 3-in-1 Indoor Air Quality Monitor with CO2/RH/Temp Data Logging and Audible Alarm - NDIR Sensor Technology
8 Review