This rubber silicon membrane switch  combines the best of rubber keypad and membrane switch technology .The rigid backer is aluminum.Provice you a membrane switch with  waterproof ,dustproof and excellent tactile feel.

Excellent tactile feel:Silicone rubber provides soft press feedback, suitable for high-frequency operations. 

Waterproof& Dustproof:Silicone rubber has good sealing properties, so this kind of membrane switch can be used in harsh environments. 

Long Lifetime :1 million keystrokes .

Customizable: The shape, size, color, and backlight type can all be customized.

Cost-Effective:  Relatively low cost compared to other electric switches, so it’s the preferred choice for products with high demand.