1、100% brand new and high quality. 2、High voltage stability, small ripple coefficient, short circuit protection and perfect with and overcurrent protection 3、The power supply includes electronic switch, convenient to open the output load. 4、The voltage value is a digital keyboard or encoder input, shorten the voltage setting time, which overcomes the traditional potentiometer adjusting bad contact voltage instability. 5、Designed for laboratory, school, and the design of the production line and the use of electronic repair. Features: 1. 100% brand new and high quality. 3. The power supply includes electronic switch, convenient to open the output load. 5. Designed for laboratory, school, and the design of the production line and the use of electronic repair. Specification: Condition: 100% Brand New Model: DPS-305BM Working Conditions: Relative Humidity: 80% Temperature: 0-40 ℃ Storage Conditions: Temperature: -10-70 ℃ Relative Humidity: 70% Load Stability: <0.01%+3mv Recovery Time: 100us Temperature Coefficient: <300PPM/C Constant Current Value: 0-5A Constant Current Output Current: 0-Nominal Value of Continuous Adjustable (Resolution 0.01A) Constant Current Output Precision: ±(1%+2) The Current Stability: <0.1%+3mA Load Stability: <0.1%+3mA Ripple and Noise Current: < 1% VP-P OCP Current Values: 0-5A, accuracy: ±(1%+2) Weight: Approx. 2039g / 71.9oz Size: Approx. 265 * 128 * 150mm / 10.4 * 5.0 * 5.9in Package List: 1 * DC Stabilized Power Supply Note: New-style and old-style are shipped randomly