Detachable design for operation and contact parts, easy installation. IP65 degree for water-proof, liquid and oil prevention enables the device to be used in different field equipments. IP40 protection degree is also available. Applied UL94V-0 high grade fire prevention plastic material. High bezel designed to prevent the accidental touch when installing the device. Can be engraved or marked with different signs on lens with many color options. Illuminated with incandescent, LED and fluorescent light to have a better effect Easy disassembly and additional contacts are available. With special terminal design, it can be used in different PCBs by using soldering or socketing terminal. Precision design enables the device with longer mechanical life by operation under the normal environment. Mechanical life: Momentary 2 million operations min.VDE/CE/UL (pending).