应用于红外线感应类开关等产品，是一种小微型贴片红外发射二极管
对室内空气环境和品质的要求控制极为严格且设备精度高。

Applied to products such as infrared induction switches, it is a small surface-mounted infrared emitting diode.
The control requirements for the indoor air environment and quality are extremely strict, and the the equipment must have high precision.