Check the listing for details. havis charge guard automatic timer switch. Condition: New. Listed at 75.00 USD. Looking for an efficient way to manage the power supply of your car video system? Check out the Havis Charge Guard Automatic Timer Switch! This device automates the process of turning on and off your car video system to ensure that it is only powered when needed, saving you valuable energy and preventing wear and tear on your equipment. Easy to install and use, the Havis Charge Guard Automatic Timer Switch is a great addition to any vehicle electronics setup. Whether you're using your car video system for entertainment, security, or monitoring purposes, this device will help you get the most out of your equipment while also protecting it from potential damage. Don't miss out on the benefits of the Havis Charge Guard Automatic Timer Switch – get yours today!