The next generation of Lowrance digital sonar for reliable digital depth display, now with temperature readings.Reliability, accuracy and simplified operation make the LST-3800 a good choice for inland or in-shore coastal boats. Its high-contrast dot matrix LCD display with advanced white LED backlighting is easy to read.It comes with a 200kHz transom-mount Skimmer transducer with built-in temp sensor, features deep and shallow alarms and has three main page displays (temperature, depth and dual display). It can show depth in Meters or Feet, temperature in Fahrenheit or Celsius and its display may be set to rotate between Temperature, Depth or Dual display pages. Fits standard 2 1/8"dia. cutout and dashes up to 1 1/8" thick.Key FeaturesHigh-contrast dot matrix display with advanced LED backlightingDepth capability to 700 feetCompact size fits standard 2 1/8" (55mm) diameter holeControls: Menu, Up, Down keysDimensions: 2 1/2" bezel dia. x 4 1/8"D (behind dash)Power Consumption: 11mA-40mAAlarms: Shallow and deep water (1'-640', programmable)