How to Protect a Membrane Switch from UV Exposure
Membrane switches intended for outdoor use are most susceptible to fading from sun exposure. Being constantly exposed to the sun’s ultraviolet (UV) rays will eventually cause the outer graphic overlay layer to fade over time. In many cases, the keys will eventually become transparent or otherwise difficult to see preventing users from being able to distinguish between the different keys.
An outdoor weatherable hardcoat material is essential when designing a membrane keypad that is used outdoors. The UV weatherable material utilizes a coating technology that resists yellowing and hazing, no matter how bright the sun is. Along with good UV resistance, this material also has chemical and abrasion resistance. This material is the perfect choice for outdoor keypad applications.
Additional Key Benefits of the UV Weatherable Material:
- Extreme durability
- Abrasion resistance
- Chemical resistance to strong household cleaners and industrial chemicals