Thanks to the Sensor, Switch, Smart Camera, and Machine Vision device OEM's
who've helped us compile our listing here.Num
UL - "Underwriter’s Laboratories Inc", a nonprofit organization that establishes, maintains, and operates laboratories for the examination and testing of devices, systems, and materials primarily for safety. Compliance is indicated by their listing mark on the product.
Ultrasonic - Sound energy at frequencies just above the range of human hearing, above 20kHz.
Unshielded - See Non-shielded