This is a IR cards made of metal materials. The surface of the product is rust- . It is the best IR cards you choose, and you will get an incredible experience. For high-power equipment, switch to lower first. Gradually increase the power to the best effect, otherwise it may break the IR cards. Features - Color: Blue. - Material: ABS and precision ceramics. - Size: 6.00 x 2.10 x 0.30cm/ 2.36 x 0.83 x 0.12 inch. - It can convert various invisible near-infrared beams into visible light. - It can effectively realize the , , proofreading and identification of infrared beams. - It can be used for near-infrared light and infrared light-emitting diode of various semiconductor machines. - Large-scale beam calibration, optical fiber and other fields. - The same board can identify infrared lottomr of different wavelengths. - The luminous intension has a certain proportional growth relationship with the excitation power of the infrared device. Package list: 1 x infrared board