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Low charge audible warning for 12V batteries – in DIY Kit

This low-charge warning buzzer alerts you when your vehicle’s battery is low. It is designed for vehicles with 12V batteries, such as cars, campers, and vans. You can set it to sound when the voltage drops below a user-defined threshold using a trimmer that allows for adjustment.
Soldering is required for assembly. The kit comes with assembly instructions in English.
Circuit diagram