Blue Sea 8239-BSS AC Digital Frequency Meter, 40-90 Hz, 80-249V AC MELMIC3 screws and a neoprene gasket

screws and a neoprene gasket included

pre-plotted courses

Adjustable GPS filter smooths speed and heading indications over swells

VSWR of <1

The NFB ("No Feed Back") steering kits give you a system that meets or exceeds NMMA certification requirements and ABYC safety standards

Blue Sea 8239-BSS AC Digital Frequency Meter, 40-90 Hz, 80-249V AC MELMIC3 screws and a neoprene gasketThe Blue Sea 8239 BSS AC Digital Frequency Meter, 40 90 Hz, 80 249V AC supports accurate monitoring or measurement of an onboard electrical system. Splashproof front; Displays frequency from 40 to 90 Hz. Product Information Manufacturer Part Number 8239 BSS Key Features Splashproof front Displays frequency from 40 to 90 Hz Manual sleep mode Three display brightness levels 3 levels of display brightness Displays frequency from 40 to 90 Hertz