The STB Optical Touch Button features include:

• Provides highest level of safety for two-hand control input devices, per independent certification tests
• Provides redundant microprocessor and optical path
• Responds to a finger blocking light rather than to pressure
• Features ergonomic design to prevent repetitive motion stress
• Includes yellow field cover to prevent unintended switching
• Immune to ambient light, EMI and RFI
• Available with e/m relays rated for 1 amp switch capacity or solid-state outputs rated for 150 mA
• Withstands exposure to a variety of chemicals, depending on model