![Blue Sea 8239 AC Digital Frequency Meter [8239]](https://www.bestfishinggeardirect.com/wp-content/uploads/2026/09/blue-sea-8239-ac-digital-frequency-meter-8239.webp)
AC Digital Frequency Meter
- Displays frequency from 40 to 90 Hertz
- 3 levels of display brightness
- Splashproof front
WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.
Owner’s Manual (pdf)
![Blue Sea 8028 DC Analog Micro Voltmeter - 2" Face, 8-16 Volts DC [8028]](https://www.bestfishinggeardirect.com/wp-content/uploads/2026/09/blue-sea-8028-dc-analog-micro-voltmeter-2-face-8-16-volts-dc-8028.webp)
![Blue Sea 8237 AC Digital Voltmeter [8237]](https://www.bestfishinggeardirect.com/wp-content/uploads/2026/09/blue-sea-8237-ac-digital-voltmeter-8237.webp)
![Blue Sea 8240 DC Analog Voltmeter - 2-3/4" Face, 18-32 Volts DC [8240]](https://www.bestfishinggeardirect.com/wp-content/uploads/2026/09/blue-sea-8240-dc-analog-voltmeter-2-3-4-face-18-32-volts-dc-8240.webp)
![Blue Sea 1830 M2 DC SoC State of Charge Monitor [1830]](https://www.bestfishinggeardirect.com/wp-content/uploads/2026/09/blue-sea-1830-m2-dc-soc-state-charge-monitor-1830.webp)
![Blue Sea 8022 DC Analog Ammeter - 2-3/4 Face, 0-50 AMP DC [8022]](https://www.bestfishinggeardirect.com/wp-content/uploads/2026/09/blue-sea-8022-dc-analog-ammeter-2-3-4-face-0-50-amp-dc-8022.webp)
![Blue Sea 8005 DC Analog Ammeter - 2-3/4" Face, 0-25 Amperes DC [8005]](https://www.bestfishinggeardirect.com/wp-content/uploads/2026/09/blue-sea-8005-dc-analog-ammeter-2-3-4-face-0-25-amperes-dc-8005.webp)
![Blue Sea 1838 M2 AC Multimeter [1838]](https://www.bestfishinggeardirect.com/wp-content/uploads/2026/09/blue-sea-1838-m2-ac-multimeter-1838.webp)
![Blue Sea 9630 AC Analog Ammeter0-50 Amperes AC [9630]](https://www.bestfishinggeardirect.com/wp-content/uploads/2026/09/blue-sea-9630-ac-analog-ammeter0-50-amperes-ac-9630.webp)
