The Alinco DM-330MVT is a variable voltage, switching power supply that delivers 5 to 15 VDC at 30 amps continuous or 32 amps surge. The combination of high-quality space-saving components and high efficiency switching technology make it possible for the DM-330MVT to be super-compact and still generate 30 amps continuous output. Alinco's communication technology has created a patent-pending Noise-Offset circuit to eliminate the pulse-noise of the switching circuit for the customer who demands more. The DM-330MVT comes with short circuit protection, a current-limiting system (over 32 amp) and extreme-temperature protection. The pre-set voltage function makes the DM-330MVT even easier to use. Just store the most frequently used voltage in the memory, and it is constantly ready to go. And of course it is easily varied. Convenience is another feature of the DM-330MVT! A cigar-plug socket (Max 10 amps), a set of Max 32 amps terminals, and two sets of snap-in terminals (Max 5 Amps) are provided. A large back-lit Amp/V meter displays the status of the power supply. Input voltage is 120 VAC. Ripple is less than 15mV p-p at rated load.