Switch type: 4P ON-OFF-ON,Voltage: 12V-24V DC LED color: Blue for switch, Red for volt meter Blue LED indicator on top position when "Battery 1" is , Blue LED indicator on bottom position when "Battery 2" is Specification: Switch type: 4P ON-OFF-ON !!! Feature: Specifically designed for marine and automotive applications UV contoured plastic panel 3-position (Battery 1/Off/Battery 2) LED illuminated rocker switch with rubber seal Includes LED volt meter - Used to test and monitor your battery's voltage Easy to install and use Panel comes pre-wired, suits 12V systems Suitable for a variety of applications including: Marine cockpits, caravan applications, trucks, 4x4s and RV's - Includes 4 mounting screws,silicone gasket colour: black Material: ABS size: Height: 100mm, Width: 60mm, Depth: 60mm Package Contents: 4 x LED Dual Battery Test Panel with Voltmeter 16x mounting screws, silicone gasket 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.