Package Dimensions:14.2 x 10.9 x 1.5 cm; 52 Grams Size:5 Count (Pack of 1) Number of Items:1 Quantity:1 batteries required:No Batteries Included:No Item Weight:52 g Specification: Item Type: UV Test Card Material: Plastic Purpose: UV Test Package List: 5 x Test Card Note: When not in use, please put the card in a card holder or store it in a dark place. About this item Quick TestingThis reusable card can accurately measure ultraviolet radiation within 10 seconds Cover TestingPlace the card at the irradiation point under the UV lamp (within 5 cm from the lamp) to check if the lamp is available Recyclable TimesIf the card does not change to purple, you need to change the light bulb, when used in increments of 10 seconds, the card can be used 500 times Easy to Test10 seconds to measure the test area of the UV test card shows purple, indicating that the bulb contains UV value Premium MaterialThe quick test UVB sensor is made of high quality plastic material, which can be used for a long time See more product details Quick TestingThis reusable card can accurately measure ultraviolet radiation within 10 seconds Cover TestingPlace the card at the irradiation point under the UV lamp (within 5 cm from the lamp) to check if the lamp is available Recyclable TimesIf the card does not change to purple, you need to change the light bulb, when used in increments of 10 seconds, the card can be used 500 times Easy to Test10 seconds to measure the test area of the UV test card shows purple, indicating that the bulb contains UV value Premium MaterialThe quick test UVB sensor is made of high quality plastic material, which can be used for a long time