About this item

• 🚀 - Simple Storage：Comes with 1 UV sensor testing card and a card sleeve for easy carrying and storage.
• 🙈 - Easy to Test：Just place the testing card 3.5 inches away from the heating lamp and wait for 10 seconds, which can quickly test if there is an ultraviolet ray.
• 🌞 - Cover Testing：Cover the test card with your thumb，when the shows color difference between the thumb-covered and non-covered areas on the testing card, means that the UVB bulb is working normally.
• ⏰ - Recyclable Times：Compatible with sunglass test & sterilizing，reusable 500 times. When not in use, you need to put it in a card sleeve or store it in a dark place.
• 💡 - Campatibility：UVB bulb and Fluorescent bulb, such heating bulbs that carry ultraviolet rays.