A line of new ultrasonic proximity sensors generates a highly focused beam of sound that can easily access very tight spaces and openings. Just 0.5 in. in diameter and 3.5 to 4 in. long, these sensors are suitable for small space applications. The focused ultrasonic sensors are available either as UNAM 12U9914/S14D analog models with variable signals or UNAM 12P1914/S14D discrete (on/off) models. The analog sensors offer sensing distances up to 82 mm, while discrete models deliver sensing accuracy up to 70 mm.