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SI-TEX SDD-110 Digital Depth Indicator

  • Instrument Display with Low Profile, Thru-Hull, 120 kHz Transducer
  • Functions: Depth 1.2 - 1000 ft., Shallow / Deep Depth and Anchor Alarms
  • Display: 4-Digit Monochrome LCD with Backlighting to (5) Levels
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    Shipping Weight: 
    3.00 Lbs.
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    Similar to SI-TEX's popular SST-110 temp gauge, the Sitex SDD-110 Seawater Depth Indicator with Bronze Thru-Hull Transducer is a drop-in replacement for the venerable Datamarine Offshore Digital Sounder, popular for many years on numerous sportsfishing vessels and workboats.


    • Sitex SDD-110FM-B operates on working frequency of 120kHz, so it won't interfere with other onboard echosounders
    • Digital Signal Processing (DSP) technology delivers accurate digital depth readings in easy-to-read numerals
    • Large, four-digit LCD display offers five levels of backlighting for optimum visibility in all ambient light conditions
    • One-piece system avoids need for black-box sounder or complicated wiring associated with network sounders
      • The 120kHz transducer plugs directly into back of unit for easy installation
    • SDD-110 uses an inexpensive, flush-mount 2" thru-hull transducer with a 38-degree beam angle
      • Allows for easy installation and proper beam orientation on most hulls without the need for a fairing block
    • In addition to providing precise water depth data, the SDD-110 also features a visible trend indicator to indicate if depth is increasing or decreasing
    • Audible alarms alert operator to dangerous shallowing conditions or if the water drops below a selected depth, useful for fishing
    • NMEA-0183 depth data output can be interfaced with other onboard equipment


    • Dimensions: 4.3" X 4.3" X 3.5"
    • Depth range: 1.2 to 1000 feet (0.3 to 365 Meters) 0.1 Feet, Meters or Fathoms below 20.0 , full digits above 20
    • Power supply: 9.50 to 16.00 VDC, .037 amps nominal
    • Operating temperature: 32 to 122 F (0 to 50 C) Size: 4.3" x 4.3" x 3.5" deep (110 x 110 x 89 mm)
    • Resolution: 20
    • Keel offset adjust range: - 20.0 to +20.0 feet
    • Alarms: Shallow depth; Deep depth; Anchor drag; External alarm output or (NMEA output)
    • Display: 4 digit LCD
      • Feet, meters, fathoms icons
      • Alarm ON/OFF icon
      • (5) levels of backlighting
      • External and internal ON/OFF control for backlights
      • Variable display damping
    • NMEA 0183:
      • $SDDPT, Depth below transducer in meters
      • $SDDBT, Depth in feet, meters, fathoms
    • Transducer: (Included)
      • Flush-mount
      • 2" Thru-hull transducer
      • 38 Degree beam angle


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