Feature: 【3 Power Supply Modes】Hand digital generator, supports 3 power supply modes, which is more convenient to use. 【Switched by One Button】Voltage and current adjustments can be switched by one button, adopt independent wiring, and output can be simultaneously performed. 【Circuit 】The output has short circuit , and power supply has reverse connection , which is safe and . 【Pluggable Terminal piece】With pluggable terminal, it is easy to install, stable in performance and easy to carry around. 【Coarse and Fine Adjustment】It supports two modes of coarse and fine adjustment, the number of adjustment turns can be set, simple . Specification: Item Type: Voltage Current Generator Material: ABS 3 Power Supply Methods: Charging with mobile phone , power bank or external 24V power supply External Power Supply: DC15-30V, Power: 1W (Not Charging)/5W (Charging) Lithium Battery Capacity: 1000mAh, 3.7V Maximum Charging Current: 0.8A External: Micro USB- 5V, Current: 0.2A (Not Charging)/1A (Charging) Voltage Output: 0-10V Adjustable, Accuracy after Calibration: 0.01V, Maximum Current: 20mA Current Output: 0-22mA Adjustable, Accuracy After Calibration: 0.01mA, Current sampling resistance is not more than 500 ohms Digital Tube Display Digits: 4 digits, two decimal places Encoder: 20 pulses per turn of the knob Power Supply: Built-in Lithium battery 1000mAH Size: Approx. 100x60x25mm / 3.9x2.4x1.0in Package List: 1 x Generator 1 x USB Cable 4 x Clip 4 x Insulation Clip Cover 1 x Screwdriver 6 x Terminal 1 x Manual Note: 1.Please allow 0‑1 inch error due to manual measurement. Thanks for your understanding. 2.Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.