Description: 1. The voltage display is the insurance holder will stay energized 2. Digital diode emitting minimal power consumption 3. If you do not want long-term display, you can put the insurance seat ground is not connected, connected to the ground when you need to check the line signals can be displayed! 4.Car Audio fuse holder high quality, gold-plated, with voltage display! 5.Package weight:350g Package include: 1xDisplay Fuse Holder