Feature: 1. Real Time Monitor: This high definition meter could monitor the battery capacity and voltage status in real time, so you can know the battery situation easily. 2. Reverse Connection Protection: The connection mode is positive and negative direct connection, with anti reverse connection protection design, safer to use. 3. Waterproof Design: The surface of this battery capacity indicator is waterproof designed, which is more secure when rainy days outgoing. 4. Compact and Portable: The battery capacity gauge is compact in size and light in weight, easy to carry and install. 5. Multi Purpose: The battery monitor can be used for RV, electric vehicle and more, displays clearly, very practical and useful. Specification: Item Type: Battery Meter Material: ABS Model: LY6W Display Screen Display Color: Blue Storage Temperature: -20℃ to 60℃ Operating Temperature: -20℃ to 50℃ Application: Suitable for RV, electric vehicle and more. Package List: 1 x Battery Meter1 x Cable4 x Screw