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Key features of ultrasonic sensors

Key features of ultrasonic sensors

Ultrasonic sensors emit short, high-frequency sound pulses at regular intervals. These propagate in the air at the velocity of sound. If they strike an object, then they are reflected back as echo sig...
What is colour?

What is colour?

Color is generated when objects are illuminated by electromagnetic radiation in a wavelength range between 380 nm and 780 nm. Radiation with a wavelength of less than 350 nm is referred to as UV radia...
What is contrast?

What is contrast?

In optical sensor technology contrast means the brightness difference of two objects. The brightness value is divided into several stages (grey values). As a rule the grey value is determined over the...
Light curtains for elevators

Light curtains for elevators

The Telco Sensors SG2 series light curtains can be used on static as well as dynamic installations. The patented AST (Automatic Signal Tracking) function automatically compensates the sensitivity base...