1.?30V/5A DC Power Supply: Our bench power supply have 4 digital dual LED display 30 volt and 5 amp output power source, constant voltage and current indicator light from 0.01V and 0.001A resolution over the full range. 2.?Switching DC Power Supply: High as 80% power efficiency, with full protection of short-circuit, over-heat, over-temperature, over-voltage and the cooling fan automatic activated by built-in thermo-sensor with low noise on our dc power source. 3.?Safety Protections Power Source: This desktop power supply designed with grounding port for prevent the tester repairing your electronic workshops from current leakage. 4.?Small 3U dc variable power supply: small size as 3U high appropriately fit for work station or test equipment cabinet. 5.?Bench Power Supply Manufacturer's Warranty: Our dc power supply with CE , EMC, LVD certification. Our patent circuit technology ensuring the best power source for small labs or the electronic DIY hobbyist.