0-5V 0-10V 4-20mA Signal Generator and Rechargeable Battery Pocket Adjustable Voltage Current Simulator Calibrator OOTDTY   Features: Pluggable terminal blocks, safe and convenient wiring. 4-digit high definition digital tube, the display brightness is uniform and adjustable (1-8 brightness). Aluminum knob cap, electroplated buttons, high quality film, charging indicator, battery switch. 3 power supply methods: External power supply, DC5V micro USB, bulit-in lithium battery(only if you choose rechargeable type can you have bulit-in lithium battery charging mode). As long as all the way to work, can also be connected at the same time. DC 15-30V external power supply, which can share the 24V power supply of PLC and other equipment. MicroUSB universal interface, can be connected to power bank, recharger, computer USB port and so on. In the normal operation screen, save a voltage and current value, cilck the encoder to save, after releasing the OK button ,the screen displays"...", which means the save is successful. Restart directly display the saved value, no need to adjust the parameters everytime when you turn on the machine, which is very practical. Easy to carry and small size, the best choice for on-site debugging. Specifications: Material: ABS Color: black Voltage output: 0-10V, 2-10V, 0-5V, 1-5V, 0-3.3V Current Output: 0-22mA, 0-20mA, 4-20mA Type:1-2 (optional) Charging method: bulit-in lithium battery(only rechargeable type), external power supply, DC5V micro USB Battery: 1 * lithium battery, 3.7V, 1100mAh (only rechargeable type included) Item size: 89 * 69 * 28mm / 3.5 * 2.7 * 1.1in Packing List: (optional) Rechargeable Type : 1 * Voltage Current Generator(rechargeable battery include) or No Rechargeable Type : 1 * Voltage Current Generator(rechargeable battery not included)