SPG series lighted switches are divided into two parts: Japanese standard and European standard: the Japanese standard part includes SPG1 and SPG2, and the European standard part includes SPG3, SPG4, and SPG5.

The Japanese standard part has SPG1 and SPG2 switches with a total height of 23mm but the pressing stroke is divided into 4.5mm and 3.5mm, one body.
The button cover comes in four sizes: square 12mm, 15mm, 17.4mm and rectangular 17.4mm*34.8mm, but Shanpu 11.5 smart cover extends into a variety of round covers.

The European regulations include SPG3, SPG4, and SPG5 bodies, which are equipped with square 12mm, 18.5mm, and 15.2mm upper covers respectively. The total height of the key switches is 24mm, and the pressing stroke is only 4.5mm.
SPG series illuminated key switches. The built-in LEDs include single-color pure green light, two-color red + pure green light, or RGB full-color (R red, G green, B blue three primary color light sources) LEDs. The button cover types are divided into flat and round. There are forms such as concave arc top, concave arc top plus convex points, and arc top.
SPG4 distinguishes two kinds of tactile sensations, one is a smooth pressing tactile feeling, and the other is a clear

Diagram with 15mm sq. cap

Diagram with 17.4mm sq. cap

Diagram with 34.8mm*17.4mm cap

Diagram with 10mm Sq. and round cap