Reptizoo UV Sensor Cards (2-Pack)

- UVB tester reptile card measures the intensity of the UVB & UVA rays of UV fluorescent lamp.

- Card changes colors from White to Purple based on the UVB & UVA ray strength.

- 2PCS Durable plastic card, credit card size, 3.4 inch x 2.1 inch comes in a sleeve.

- New High Tech, Non-Toxic, environmentally friendly detection material that is printed on the card to measure the UVB/UVA rays of UVB lamps.

- Can be used over and over again up to 500 times