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The DORTRONICS 4204NX is a power supply controller designed for fire alarm systems and security applications. It supports both twelve and twenty-four-volt direct current power supply options, making it flexible for different setups.
This model includes alarm relay outputs and a built-in automatic battery charging function, which enables reliable operation during power outages.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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