The IX Series push-button, from APEM, is the latest addition to the I series, combining the qualities of the IP and IA series with a backlit switch. The series also features a flexible elastomer membrane actuator, with no space between the actuator and 12 mm compact bushing, ensuring an IP69K panel sealing for an ultra-waterproof feature. This provides good resistance to frost, sand and other contaminants.The ultrathin design offers an ergonomic advantage with a tight matrix mounting. The product is also customisable, with a choice of nine different actuator colours, illuminated markings with five different LED colours and many different symbols. Illumination can also be limited to just the symbol or the entire membrane actuator.The series is recommended for harsh environments and all key markets of material handling, agriculture machinery, defence and more.