• Continuous internal self-checking operation
• Diverse-redundant microcontroller-based photoelectric touch buttons
• Ergonomically designed to eliminate hand, wrist, and arm stresses associated with
repeated switch operation; requires no physical pressure to operate
• High excess gain cuts through heavy contamination
• Immune to ambient light, EMI, and RFI interference
• LED power, output, and fault indicators
• Pre-installed field covers protect the device and prevent inadvertent activation