Main Features: --Response and high accuracy when compared with linear power supply. --Output voltage and output current between 0 to rated value is continuously adjustable. --Constant voltage and constant current can automatic conversion. --Overload and reverse polarity protection keep power supply and its loads safe from unexpected conditions. --LED digital display output voltage and output current --Cooling fan is connected with temperature sensor. Its can reduce the fan speed automatically when the internal temperature or load decreases to prevent the additional noise ZHAO XIN KXN-15100D DC power supply 15V 100A can be long-term use Input voltage: 220V ± 10% Frequency: 50/60Hz Output voltage: continuously adjustable DC: 0-15V Output Current: continuously adjustable DC 0-100A Protection: Current limit protection and short circuit protection Power effect: ≤ 0.01% +2 mV Load effect: ≤ 0.01% +2 mV Ripple and noise: CV ≤ 1MVRMS (rms) Ambient temperature: -10  -40  Relative humidity: <90% Customer Note: Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer's responsibility. Please check with your country's customs office to determine what these additional costs will be prior to bidding / buying. About free shipping products: 1; does not include addresses belong to customers in remote areas, buyers, bear the additional courier company in remote areas delivery fee. 2; does not include addresses belong to private residential customers, buyers, bear the additional courier company private residential delivery fees.