Blue Sea 8251 DC Digital Voltmeter with Alarm

The Blue Sea Systems 8251 DC Digital Voltmeter reads 0 to 60 volts with audible and visual alarms on high and low voltage.

The alarms are what separate this from the plain 8235 at the same range, and the low voltage alarm is the one that pays for itself. A house bank drawn down too far loses capacity permanently, and the damage happens quietly while nobody is watching the panel.

An alarm turns that into something actionable rather than something discovered when the bank stops holding a charge months later. High voltage warning covers the other end, catching a charger or regulator overcharging the bank.

Three levels of display brightness suit a panel read in daylight and after dark, and the front is splashproof. A programmable sleep mode blanks the display for power conservation, and it works with 12, 24, 32, 36 and 42 volt DC systems. Explore more marine electrical meters.

• Alarms are what separate it from the plain 8235
• A bank drawn too far loses capacity permanently
• The damage happens quietly with nobody watching
• High voltage alarm catches an overcharging regulator