Features: Generate ampere and voltage by one module. Voltage output: 0-10V, precision is 0.01V. Current output: 0-22mA, precision is 0.01mA. Built-in 1100mAh rechargeable battery, more flexible to use. Press the knob to save the setting output value. Clear 4-digit LED digital display screen. Power supply: micro USB-5V or external power DC 15-30V. Simple and handy to operate with aluminium alloy knob. Super compact and lightweight, easy to carry around. Specifications: Material: Plastic + Aluminium Alloy Type: with/ without Built-in Battery (Optional) External Power: DC 15-30V Power: without Built-in Battery: 1W with Built-in Battery: 5W Voltage Output: 0-10V, Precision: 0.01V, Max. Current: 20mA Current Output: 0-22mA, Precision: 0.01mA Screen: 4-digit LED Digital Display Built-in Battery: 3.7V 1100mAh Lithium Battery Item Size: 70 * 90 * 27mm / 2.8 * 3.5 * 1.1in Item Weight: with Built-in Battery: 111g / 3.9oz without Built-in Battery: 90g / 3.2oz Package List: 1 * Signal Generator