Features: 1. The case of this power supply is made of thick steel sheets, with beautiful appearance and good durability. 2. You can accurately adjust the output current and voltage by fine/coarse tune knobs. 3. Automatic conversion between constant voltage(CV) mode and constant current(CC) mode. 4. Provide all-round protection functions including overvoltage protection(OVP), open circuit protection(OCP) and over temperature protection(OTP). 5. Built-in intelligent temperature control fan adjusts rotary speed according to the load condition, which can effectively dissipate heat and prolong the life of this machine. 6. Widely used in accumulator charging industry, product aging test, inverter, LED, etc. Specification: Plug type & voltage: AU plug Input voltage: AC 220V Output current: DC 0-10A continuous adjustable Output voltage: DC 0-30V continuous adjustable Output power(Max): 300W Display resolution: voltage: 0.1V, current: 0.1A Display precision: ± (1%+1digit) Voltage stability: ≤ 0.05% +10mV Current stability: ≤ 0.1% +10mA Load stability: CV ≤ 0.1% +1mV / CC ≤ 0.1% +10mA Ripples and noises: CV ≤ 10mV(RMS) / CC ≤ 20mA(RMS) Working environment: -10 ~ 40 ℃ ,