Battery Monitors & Volt Meters

Sea-Dog Line Battery Test Switch-Economy 422020-1Aluminum.

Sea-Dog Line Dual Round Voltmeter 421616-1This digital dual voltmeter displays voltage for main and auxiliary batteries simultaneously. The compact size allows installation in a wide variety of locations. Red LED display. IP65 rating. Injection molded...

Blue Sea Systems Meter Mini Oled DC Amps 1732Monitors DC voltage on a bright, waterproof, daylight readable OLED screen.Compact size enables convenient mountingIP66 waterproofReverse polarity protectedMounts in a common 1-1/8 in (29 mm) diameter...

Blue Sea Systems Meter Mini Oled Temp 1741Monitors DC voltage on a bright, waterproof, daylight readable OLED screen.Compact size enables convenient mountingIP66 waterproofReverse polarity protectedMounts in a common 1-1/8 in (29 mm) diameter holeNominal...

Blue Sea Systems Monitor M2 Oled DC Amperage 1832The M2 Organic LED Digital Monitor measures essential electrical system parameters with adjustable alarms and an auto-dimming display. The M2 Monitors include a MOSFET External Circuit Relay (ECR) which...

Sea-Dog Line Battery Monitor with Expanded 423112This panel features an expanded scale, simplified color band meter for accurate battery condition of two separate batteries. Operation is controlled by a 3 position rocker switch, allowing independent...

Sea-Dog Line Dual Voltmeter Rocker Switch 421636-1This rocker switch style dual voltmeter monitors and displays the voltage for main and auxiliary batteries simultaneously. Fits into any 13/16" × 1-7/16" rocker switch hole. Digital red LED display. IP65...

Sea-Dog Line Round Digital Voltage Meter 421615-1Compact size allows for installation in a variety of locations - the same round size as a standard 12V receptacle. For interior or fully protected locations only. Volts 4-30. Injection molded nylon...

Sea-Dog Line Round Digital Voltage/Ampmeter 421625-1Compact size allows for installation in a variety of locations - the same round size as a standard 12V receptacle. For interior or fully protected locations only. Volts 4-30. Injection molded nylon...