The HY001-IR/UV Flame Simulator is designed for testing flame detectors of the following types: UV (Ultraviolet) IR (Single-band Infrared) IR2 (Dual-band Infrared) IR3 (Triple-band Infrared) IR/UV (Infrared/Ultraviolet Combined) It allows users to test flame detectors in environments where open flames cannot be used. Different manufacturers of infrared flame detectors have different detection frequencies. This product is suitable for infrared flame detectors with a frequency of 0 - 10Hz.