UNIROI DC Variable Power Supply, 30V 5A DC Bench Power Supply with 3-Digit LED Display, Alligator Clip Leads (Banana Plug and Spade Lugs), Input Power Cord UC305 Adjustable DC Power Supply: Variable voltage output: 0-30 volts; Variable current output: 0-5 amp; 3-digit LED Display accuracy: 00.1V and 0.01A. Widely used to testing of production line, electrical maintenance, charging of accumulators, and scientific research teaching. Constant-Current & Constant-Voltage Operation Mode: The two operation modes will switch over automatically as the load changes. There are indicators of the two modes on the Display. Gift: Comes with 2pcs Alligator Clip Leads (one is with banana plug, one is with spade lugs), 1pc Input Power Cord. Great for using in home, labs, and schools. Multiple Safety Protections: Features current-limiting protection, thermal protection, voltage overload protection, short-circuit protection. Intelligent Temperature Control: Cooling fan with built-in thermal sensor can automatically cool the power supply, low noise, effectively extend its service life.