R111 Low-High Chirp, 2kW, No Connector, DO 2 kW Airmar s R111LH is an in-hull, 2 kW transducer which delivers excellent target detail, bottom discrimination, and bait and game-fish separation. The R111LH is packed with a fifteen-element, low-frequency array that operates anywhere between 38 and 75 kHz, delivering great depth capability down to 1829 m (6000 ft). The single, high-frequency ceramic operates at any frequency between 130 and 210 kHz and has a narrow, 8 degree to 4 degree, beam that provide tremendous bottom detail and fish-target discrimination at depths to 457 m (1500 ft). The transducer is installed in the included tank which is cut to the boat s deadrise angle and affixed inside the hull. When the transducer is placed inside the tank, it is properly oriented for optimal performance. The R111LH is a popular choice for customers not wanting to drill a hole in their hull and for trailered or multi-hull boats.