The insulation material in the indicator light is an important part of ensuring the safe and reliable operation of the equipment. These materials are mainly used for electrical insulation to prevent leakage and short circuits, while also protecting users from the risk of electric shock. Common insulating materials include polyvinyl chloride (PVC), polyester (PET), epoxy resin and silica gel.

Polyvinyl chloride (PVC) is a widely used insulating material, with good electrical insulation properties, chemical resistance and weather resistance, suitable for indicators in ordinary environments. Polyester (PET) is favored for its superior insulation and mechanical strength and is often used in demanding electronic products. Epoxy resin forms a hard insulating layer by curing, has good heat resistance and moisture resistance, and is suitable for applications in high temperature and high humidity environment. In addition, silicone, because of its excellent flexibility and resistance to extreme temperature changes, is often used for indicators that need to be waterproof or sealed.

Choosing the right insulation material can not only improve the safety and performance of the indicator, but also extend its service life. Therefore, designers need to consider insulation performance, environmental adaptability and cost factors when selecting materials to ensure the reliability and functionality of the indicator light.