The Banner Engineering SMA30PELQD SM30 Series 30 mm Barrel Sensor has a very high excess gain, with a 150 m (500 ft) sensing range and 880 nm Infrared LED. The positive sealing stops capillary leakage. The lens of the Banner SM30 Series is quad-ring sealed and exceeds NEMA 6P (IP67) ratings. Featuring EZ-BEAM technology, this product provides reliable sensing without the need for adjustments. The Banner Engineering SM30 Series 30 mm Barrel Sensor has been engineered to perform well in equipment wash-down environments. Modulation frequency A is standard, and frequencies B and C also available for preventing crosstalk in multiple-sensor applications (emitter and opposed receiver frequencies must match). AC- and DC-operated receiver models are also available. Emitters feature universal voltage. Range for all models: 150 m (500 ft).