The Mini Series Sensor , Mini-A and Mini-S, offers a total system in a compact package, containing an ultra-sensitive electrostatic transducer and the supporting circuitry to provide either an analog output (Mini-A) or two NPN digital outputs (Mini-S). The Mini series can be internally or externally triggered, and provides an output over the sensing ranges of 1 inch to 12 inches, 6 inches to 20 feet, or 12 inches to 40 feet.