Designed to look like its recently launched SST-110 sea-surface temperature gauge, SI-TEX’s new SDD-110 stand-alone digital depth gauge operates at 120 kHz so it won’t interfere with other onboard sounders. The unit measures 4.3-by-4.3-by-3.5 inches and uses digital signal processing to display depth from 18 inches to 1,000 feet on a four-digit LCD display. The display offers five levels of backlighting to optimize visibility. The SDD-110 uses a flush-mount, 2-inch, through-hull transducer with a 38-degree beam angle. The transducer plugs directly into the display, which also outputs to NMEA-0183 devices. Cost is $349, excluding transducer. Call 631-996-2690 or visit www.si-tex.com.