Description: Nautical, electric, electronic, measuring, signaling, and checking apparatus and instruments, namely, electrical panels, namely, battery management panels, circuit breaker panels, contour connect panels, monitoring panels, RCD panels, and switch panels; electrical panels, namely, battery management panels, circuit breaker panels, contour connect panels, monitoring panels, RCD panels, and switch panels suitable for marine applications; electrical panels, namely, battery management panels, circuit breaker panels, contour connect panels, monitoring panels, RCD panels, and switch panels suitable for automotive applications; electronic regulators, namely, voltage regulators; voltage sensitive and timed controlled electric relays; batteries; battery chargers; motor control panels for marine applications; inverters; electric cables; electrical components, namely, wire harnesses for use in marine applications; electric terminals; electric switches; circuit breaker distribution panels; electric system operation panels; electric switch panels; electrical spray proof switch panels; bus bars; battery switches; remote controlled battery switches and voltage sensitive electric relays; heavy duty distribution studs, namely, electrical power distribution blocks; heavy duty ANL fuse holders; heavy duty fuse holders; heavy duty circuit breaker modules; battery maintainers; solenoid valves; charging regulators; solar panel regulators, namely, charging regulators and voltage regulators for use with solar panels; AC and DC systems monitors for monitoring circuit status and power consumption; digital monitors for voltage, amp, amp hours, and tank levels; analog monitors for DC volts and amps; analog monitors for AC volts and amps; gas detectors; gas testing instruments; marine safety gas detectors; tank level monitors for monitoring and controlling liquids in tanks; digital controlled switching and monitoring systems comprising power distribution panels, bus bars, electric switches; electric switch control interfaces, and electric output interfaces; ultrasonic tank senders, namely, tank senders that use ultrasonic pulses to monitor the liquid level in tanks of various depths with RF and digital can output