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Your cart is empty.The Havis ChargeGuard Select CG.X automatic on/off timer switch acts as a vehicle power management system by automatically turning on mobile equipment when starting the motor. The 12 volt negative ground ignition sensing timer switch is designed for two-way radios, mobile data terminals, laptop computers and other mobile computing devices.
The ChargeGuard delay timer switch has a selectable timeout delay. When turning the motor off, equipment can stay on from 5 seconds to infinity depending on what is programmed. This programmable timer delay switch comes pre-programmed with a two hour delay as the default setting.
This on/off timer switch wires directly to the battery or ignition switch in your vehicle. The ChargeGuard features your choice of sensing mode, automatic detection mode (AC), isolated alternator detection, voltage rise detection (DC only), or direct ignition mode (HL), depending on your preference.The Havis ChargeGuard Select delivers higher productivity and lower maintenance costs for your two-way mobile communication.
Or Many
2025-09-06 13:26:06
Works great
John Moore
2025-09-04 16:32:31
This is a fine gadget - good for protecting your car battery while allowing accessories to be powered directly from it. It is easy to use and set up, and once installed, just works. I designed something like this professionally as an engineer - for use in a battery backed up product we manufactured, so when I say this is well done, I say that with some expertise. I had also used a previous version of this in other vehicles for about 20 years, and it did the job.I would prefer one addition - contacts to allow the over-ride switch to be closed remotely.But, this is really a fine product.
no one of consequence
2025-07-27 17:23:39
Use it to power the ECM on a firestone air bag suspension system in my truck when the engine is running and kill power after I shut the truck down (I set it to DC mode). Works well for that purpose. Takes a minute to fire off, and about 30 seconds to turn off in my application. I'm sure using ignition sense would make it more responsive, but there's times when I need the ignition on and don't want the extra amps to draw from the battery from the air bag suspension compressor.
Robbie
2025-06-03 18:43:17
I bought these to control power to a siren amplifier and a mobile radio. I had problems with my truck battery dying from leaving constant power to them. I set these to come on when it senses power and to go off 5 seconds after it loses power. They work great and I don’t have to worry about turning stuff off or coming out to a dead battery.
Upstate NY
2025-05-02 18:05:20
Works well!
Cynthia Cranmer
2025-04-25 18:26:54
product is fine the new process to get in to amazon will destroy the experience
Digger
2025-04-22 12:12:57
This will be my second charge guard for my other vehicle. Terrific product and even better company. Great customer service!!
Matthew Stockwell
2024-11-13 18:17:04
Saved the life of my battery
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