Model LF 40. IRT 6520, 6500, 6030, 6020, 4520, 4020, 3520, 3020. Use only Braun certified lens filters for accurate readings. BPA free. Latex free. www.kaz.com/braun. For operating instructions, see use and care manual. For use only with Braun ThermoScan IRT series thermometers. Made in USA.