MORE STURDY, BETTER CONDUCTIVITY: Compared with the traditional ABS plastic shell material, duty cut off switch uses a better nylon 66 shell, high temperature resistance effect is better, more safe to use; The internal screw of the cutoff switch uses copper plated silver + silver contacts, which has better electrical conductivity, oxidation resistance and longer service life. LED DIGITAL VOLTMETER DISPLAY: The battery isolator switch is equipped with an LED display, which displays the current voltage status in real time, allowing you to better monitor the battery status at any time. When the battery switch is on, the upper button screen monitors the voltage in real time. When the master disconnect switch is off, the screen does not display. EASY TO OPERATE: On/Off 2 position, Suitable for various 6V/12V/24V/48V/60V systems. Current: 250A Continuous at DC 12V; 300A for 30 minutes. Clockwise to turn on , counter clockwise to turn off. WIDE APPLICATION: Battery isolator switch is universal used for RV, Marine, Car, Boat, , Travel Trailer, Truck, ATV, UTV battery and other engine application, makes it an effortless job of turning the battery on and off. Color: Black Material: Plastic+Metal Package Contents: 1X Battery Disconnect Switch With Voltmeter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.